12387631900 has 36 divisors (see below), whose sum is σ = 30721328848. Its totient is φ = 4247187840.

The previous prime is 12387631897. The next prime is 12387631901. The reversal of 12387631900 is 913678321.

It is a super-2 number, since 2×12387631900² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387631901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8847609 + ... + 8849008.

Almost surely, 2^12387631900 is an apocalyptic number.

12387631900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12387631900 is an abundant number, since it is smaller than the sum of its proper divisors (18333696948).

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

12387631900 is a wasteful number, since it uses less digits than its factorization.

12387631900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17696638 (or 17696631 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 12387631900 in words is "twelve billion, three hundred eighty-seven million, six hundred thirty-one thousand, nine hundred".