31669423564438 has 16 divisors (see below), whose sum is σ = 52281301013136. Its totient is φ = 14267801443840.

The previous prime is 31669423564391. The next prime is 31669423564477. The reversal of 31669423564438 is 83446532496613.

It is a self number, because there is not a number n which added to its sum of digits gives 31669423564438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6369551731 + ... + 6369556702.

It is an arithmetic number, because the mean of its divisors is an integer number (3267581313321).

Almost surely, 2^{31669423564438} is an apocalyptic number.

31669423564438 is a deficient number, since it is larger than the sum of its proper divisors (20611877448698).

31669423564438 is a wasteful number, since it uses less digits than its factorization.

31669423564438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12739108559.

The product of its digits is 268738560, while the sum is 64.

The spelling of 31669423564438 in words is "thirty-one trillion, six hundred sixty-nine billion, four hundred twenty-three million, five hundred sixty-four thousand, four hundred thirty-eight".