Search a number
-
+
123231122300 = 225211138617561
BaseRepresentation
bin111001011000100100…
…1011011001101111100
3102210002012002122000202
41302301021123031330
54004334131403200
6132340034343032
711621532154016
oct1626111331574
9383065078022
10123231122300
1148297835130
121ba71a2aa78
13b80b731960
145d705131b6
1533139a01d5
hex1cb125b37c

123231122300 has 72 divisors (see below), whose sum is σ = 314161840272. Its totient is φ = 41364288000.

The previous prime is 123231122297. The next prime is 123231122303. The reversal of 123231122300 is 3221132321.

It is an interprime number because it is at equal distance from previous prime (123231122297) and next prime (123231122303).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123231122303) 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, 4294481 + ... + 4323080.

Almost surely, 2123231122300 is an apocalyptic number.

123231122300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123231122300 is an abundant number, since it is smaller than the sum of its proper divisors (190930717972).

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

123231122300 is a wasteful number, since it uses less digits than its factorization.

123231122300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8617599 (or 8617592 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123231122300 its reverse (3221132321), we get a palindrome (126452254621).

The spelling of 123231122300 in words is "one hundred twenty-three billion, two hundred thirty-one million, one hundred twenty-two thousand, three hundred".

Divisors: 1 2 4 5 10 11 13 20 22 25 26 44 50 52 55 65 100 110 130 143 220 260 275 286 325 550 572 650 715 1100 1300 1430 2860 3575 7150 14300 8617561 17235122 34470244 43087805 86175610 94793171 112028293 172351220 189586342 215439025 224056586 379172684 430878050 448113172 473965855 560141465 861756100 947931710 1120282930 1232311223 1895863420 2240565860 2369829275 2464622446 2800707325 4739658550 4929244892 5601414650 6161556115 9479317100 11202829300 12323112230 24646224460 30807780575 61615561150 123231122300