31316621454625 has 32 divisors (see below), whose sum is σ = 42090547000320. Its totient is φ = 23125566744000.

The previous prime is 31316621454589. The next prime is 31316621454647. The reversal of 31316621454625 is 52645412661313.

It is a happy number.

It is not a de Polignac number, because 31316621454625 - 2¹⁷ = 31316621323553 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 75255880 + ... + 75670870.

It is an arithmetic number, because the mean of its divisors is an integer number (1315329593760).

Almost surely, 2^{31316621454625} is an apocalyptic number.

It is an amenable number.

31316621454625 is a deficient number, since it is larger than the sum of its proper divisors (10773925545695).

31316621454625 is a wasteful number, since it uses less digits than its factorization.

31316621454625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461458 (or 461448 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 49.

The spelling of 31316621454625 in words is "thirty-one trillion, three hundred sixteen billion, six hundred twenty-one million, four hundred fifty-four thousand, six hundred twenty-five".