231531500196 has 24 divisors (see below), whose sum is σ = 600266852640. Its totient is φ = 77177166696.

The previous prime is 231531500171. The next prime is 231531500197. The reversal of 231531500196 is 691005135132.

It is a happy number.

231531500196 is a `hidden beast` number, since 2 + 31 + 5 + 31 + 500 + 1 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 231531500196.

It is not an unprimeable number, because it can be changed into a prime (231531500197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071904986 + ... + 1071905201.

It is an arithmetic number, because the mean of its divisors is an integer number (25011118860).

Almost surely, 2^231531500196 is an apocalyptic number.

It is an amenable number.

231531500196 is an abundant number, since it is smaller than the sum of its proper divisors (368735352444).

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

231531500196 is a wasteful number, since it uses less digits than its factorization.

231531500196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143810200 (or 2143810192 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The spelling of 231531500196 in words is "two hundred thirty-one billion, five hundred thirty-one million, five hundred thousand, one hundred ninety-six".