31000536252 has 72 divisors (see below), whose sum is σ = 94825182816. Its totient is φ = 8336277504.

The previous prime is 31000536251. The next prime is 31000536283. The reversal of 31000536252 is 25263500013.

31000536252 is a `hidden beast` number, since 3 + 100 + 0 + 536 + 25 + 2 = 666.

It is a super-2 number, since 2×31000536252² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000536251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3613893 + ... + 3622460.

It is an arithmetic number, because the mean of its divisors is an integer number (1317016428).

Almost surely, 2^31000536252 is an apocalyptic number.

It is an amenable number.

31000536252 is an abundant number, since it is smaller than the sum of its proper divisors (63824646564).

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

31000536252 is a wasteful number, since it uses less digits than its factorization.

31000536252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236387 (or 7236382 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The spelling of 31000536252 in words is "thirty-one billion, five hundred thirty-six thousand, two hundred fifty-two".