12685131000 has 96 divisors (see below), whose sum is σ = 42875773200. Its totient is φ = 3382699200.

The previous prime is 12685130981. The next prime is 12685131013. The reversal of 12685131000 is 13158621.

It is a super-2 number, since 2×12685131000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 695730 + ... + 713729.

Almost surely, 2^12685131000 is an apocalyptic number.

12685131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12685131000 is an abundant number, since it is smaller than the sum of its proper divisors (30190642200).

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

12685131000 is a wasteful number, since it uses less digits than its factorization.

12685131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409486 (or 1409469 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 12685131000 its reverse (13158621), we get a palindrome (12698289621).

The spelling of 12685131000 in words is "twelve billion, six hundred eighty-five million, one hundred thirty-one thousand".