31008040252 has 18 divisors (see below), whose sum is σ = 63123510912. Its totient is φ = 13289160024.

The previous prime is 31008040247. The next prime is 31008040267. The reversal of 31008040252 is 25204080013.

It is a super-2 number, since 2×31008040252² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79101948 + ... + 79102339.

Almost surely, 2^31008040252 is an apocalyptic number.

It is an amenable number.

31008040252 is an abundant number, since it is smaller than the sum of its proper divisors (32115470660).

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

31008040252 is a wasteful number, since it uses less digits than its factorization.

31008040252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158204305 (or 158204296 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 31008040252 in words is "thirty-one billion, eight million, forty thousand, two hundred fifty-two".