31369438144 has 28 divisors (see below), whose sum is σ = 67907705688. Its totient is φ = 14258835200.

The previous prime is 31369438049. The next prime is 31369438189. The reversal of 31369438144 is 44183496313.

It is a junction number, because it is equal to n+sod(n) for n = 31369438094 and 31369438103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22278727 + ... + 22280134.

Almost surely, 2^31369438144 is an apocalyptic number.

It is an amenable number.

31369438144 is an abundant number, since it is smaller than the sum of its proper divisors (36538267544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31369438144 is a wasteful number, since it uses less digits than its factorization.

31369438144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44558884 (or 44558874 counting only the distinct ones).

The product of its digits is 746496, while the sum is 46.

The spelling of 31369438144 in words is "thirty-one billion, three hundred sixty-nine million, four hundred thirty-eight thousand, one hundred forty-four".