31842136900 has 36 divisors (see below), whose sum is σ = 78968501248. Its totient is φ = 10917303840.

The previous prime is 31842136897. The next prime is 31842136903. The reversal of 31842136900 is 963124813.

It is an interprime number because it is at equal distance from previous prime (31842136897) and next prime (31842136903).

It is a super-2 number, since 2×31842136900² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31842136900.

It is not an unprimeable number, because it can be changed into a prime (31842136903) 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, 22743684 + ... + 22745083.

Almost surely, 2^31842136900 is an apocalyptic number.

It is an amenable number.

31842136900 is an abundant number, since it is smaller than the sum of its proper divisors (47126364348).

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

31842136900 is a wasteful number, since it uses less digits than its factorization.

31842136900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45488788 (or 45488781 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 31842136900 in words is "thirty-one billion, eight hundred forty-two million, one hundred thirty-six thousand, nine hundred".