31551053252 has 24 divisors (see below), whose sum is σ = 57800276352. Its totient is φ = 15041100800.

The previous prime is 31551053249. The next prime is 31551053263. The reversal of 31551053252 is 25235015513.

It is a super-2 number, since 2×31551053252² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522749 + ... + 579972.

It is an arithmetic number, because the mean of its divisors is an integer number (2408344848).

Almost surely, 2^31551053252 is an apocalyptic number.

It is an amenable number.

31551053252 is a deficient number, since it is larger than the sum of its proper divisors (26249223100).

31551053252 is a wasteful number, since it uses less digits than its factorization.

31551053252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103059 (or 1103057 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 32.

Adding to 31551053252 its reverse (25235015513), we get a palindrome (56786068765).

The spelling of 31551053252 in words is "thirty-one billion, five hundred fifty-one million, fifty-three thousand, two hundred fifty-two".