31540500252 has 60 divisors (see below), whose sum is σ = 85112902336. Its totient is φ = 10174351680.

The previous prime is 31540500217. The next prime is 31540500259. The reversal of 31540500252 is 25200504513.

It is a happy number.

31540500252 is a `hidden beast` number, since 3 + 1 + 5 + 405 + 0 + 0 + 252 = 666.

It is a super-2 number, since 2×31540500252² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31540500259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1560073 + ... + 1580160.

Almost surely, 2^31540500252 is an apocalyptic number.

It is an amenable number.

31540500252 is an abundant number, since it is smaller than the sum of its proper divisors (53572402084).

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

31540500252 is a wasteful number, since it uses less digits than its factorization.

31540500252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140280 (or 3140269 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 31540500252 in words is "thirty-one billion, five hundred forty million, five hundred thousand, two hundred fifty-two".