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231050405004400 = 24522371353720767
BaseRepresentation
bin110100100010001110011101…
…010100001100010001110000
31010022002012110222122202202101
4310202032131110030101300
5220241012212140120100
62135223031333230144
766444561266152462
oct6442163524142160
91108065428582671
10231050405004400
116768aa21176123
1221ab7149192354
139bbcc6260aa47
14410ac83852132
151baa2407c586a
hexd2239d50c470

231050405004400 has 120 divisors (see below), whose sum is σ = 587391537106944. Its totient is φ = 87156796742400.

The previous prime is 231050405004359. The next prime is 231050405004403. The reversal of 231050405004400 is 4400504050132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231050405004403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176207184 + ... + 177513583.

Almost surely, 2231050405004400 is an apocalyptic number.

231050405004400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231050405004400 is an abundant number, since it is smaller than the sum of its proper divisors (356341132102544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231050405004400 is a wasteful number, since it uses less digits than its factorization.

231050405004400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353720879 (or 353720868 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 231050405004400 its reverse (4400504050132), we get a palindrome (235450909054532).

The spelling of 231050405004400 in words is "two hundred thirty-one trillion, fifty billion, four hundred five million, four thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 23 25 40 46 50 71 80 92 100 115 142 184 200 230 284 355 368 400 460 568 575 710 920 1136 1150 1420 1633 1775 1840 2300 2840 3266 3550 4600 5680 6532 7100 8165 9200 13064 14200 16330 26128 28400 32660 40825 65320 81650 130640 163300 326600 653200 353720767 707441534 1414883068 1768603835 2829766136 3537207670 5659532272 7074415340 8135577641 8843019175 14148830680 16271155282 17686038350 25114174457 28297661360 32542310564 35372076700 40677888205 50228348914 65084621128 70744153400 81355776410 100456697828 125570872285 130169242256 141488306800 162711552820 200913395656 203389441025 251141744570 325423105640 401826791312 406778882050 502283489140 577626012511 627854361425 650846211280 813557764100 1004566978280 1155252025022 1255708722850 1627115528200 2009133956560 2310504050044 2511417445700 2888130062555 3254231056400 4621008100088 5022834891400 5776260125110 9242016200176 10045669782800 11552520250220 14440650312775 23105040500440 28881300625550 46210081000880 57762601251100 115525202502200 231050405004400