31657064545 has 8 divisors (see below), whose sum is σ = 38005703424. Its totient is φ = 25314167664.

The previous prime is 31657064519. The next prime is 31657064557. The reversal of 31657064545 is 54546075613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31657064545 - 2¹¹ = 31657062497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31657064495 and 31657064504.

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, 1423359 + ... + 1445428.

It is an arithmetic number, because the mean of its divisors is an integer number (4750712928).

Almost surely, 2^31657064545 is an apocalyptic number.

It is an amenable number.

31657064545 is a deficient number, since it is larger than the sum of its proper divisors (6348638879).

31657064545 is a wasteful number, since it uses less digits than its factorization.

31657064545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870999.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 31657064545 in words is "thirty-one billion, six hundred fifty-seven million, sixty-four thousand, five hundred forty-five".