31371326604 has 72 divisors (see below), whose sum is σ = 81914348880. Its totient is φ = 10115597952.

The previous prime is 31371326593. The next prime is 31371326617. The reversal of 31371326604 is 40662317313.

31371326604 is a `hidden beast` number, since 3 + 1 + 37 + 13 + 2 + 6 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 162367 + ... + 298505.

It is an arithmetic number, because the mean of its divisors is an integer number (1137699290).

Almost surely, 2^31371326604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31371326604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40957174440).

31371326604 is an abundant number, since it is smaller than the sum of its proper divisors (50543022276).

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

31371326604 is a wasteful number, since it uses less digits than its factorization.

31371326604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136359 (or 136354 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 31371326604 in words is "thirty-one billion, three hundred seventy-one million, three hundred twenty-six thousand, six hundred four".