31664923953 has 16 divisors (see below), whose sum is σ = 45486576576. Its totient is φ = 19477967040.

The previous prime is 31664923951. The next prime is 31664923957. The reversal of 31664923953 is 35932946613.

It is not a de Polignac number, because 31664923953 - 2¹ = 31664923951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31664923896 and 31664923905.

It is not an unprimeable number, because it can be changed into a prime (31664923951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74350 + ... + 262407.

It is an arithmetic number, because the mean of its divisors is an integer number (2842911036).

Almost surely, 2^31664923953 is an apocalyptic number.

It is an amenable number.

31664923953 is a deficient number, since it is larger than the sum of its proper divisors (13821652623).

31664923953 is a wasteful number, since it uses less digits than its factorization.

31664923953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339184.

The product of its digits is 3149280, while the sum is 51.

The spelling of 31664923953 in words is "thirty-one billion, six hundred sixty-four million, nine hundred twenty-three thousand, nine hundred fifty-three".