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23101231000 = 235331745201
BaseRepresentation
bin10101100000111100…
…001100111110011000
32012121222001010102011
4111200330030332120
5334302403343000
614340151315304
71445320136461
oct254074147630
965558033364
1023101231000
119885051851
12458867bb34
132242044073
14119211dd68
159031592ba
hex560f0cf98

23101231000 has 64 divisors (see below), whose sum is σ = 55800725760. Its totient is φ = 8942400000.

The previous prime is 23101230983. The next prime is 23101231003. The reversal of 23101231000 is 13210132.

It is a super-2 number, since 2×231012310002 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23101231003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341601 + ... + 403600.

It is an arithmetic number, because the mean of its divisors is an integer number (871886340).

Almost surely, 223101231000 is an apocalyptic number.

23101231000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23101231000 is an abundant number, since it is smaller than the sum of its proper divisors (32699494760).

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

23101231000 is a wasteful number, since it uses less digits than its factorization.

23101231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745253 (or 745239 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 23101231000 its reverse (13210132), we get a palindrome (23114441132).

The spelling of 23101231000 in words is "twenty-three billion, one hundred one million, two hundred thirty-one thousand".

Divisors: 1 2 4 5 8 10 20 25 31 40 50 62 100 124 125 155 200 248 250 310 500 620 775 1000 1240 1550 3100 3875 6200 7750 15500 31000 745201 1490402 2980804 3726005 5961608 7452010 14904020 18630025 23101231 29808040 37260050 46202462 74520100 92404924 93150125 115506155 149040200 184809848 186300250 231012310 372600500 462024620 577530775 745201000 924049240 1155061550 2310123100 2887653875 4620246200 5775307750 11550615500 23101231000