31077475604 has 72 divisors (see below), whose sum is σ = 64726941888. Its totient is φ = 13014462720.

The previous prime is 31077475589. The next prime is 31077475607. The reversal of 31077475604 is 40657477013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31077475607) by changing a digit.

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, 1562627 + ... + 1582389.

It is an arithmetic number, because the mean of its divisors is an integer number (898985304).

Almost surely, 2^31077475604 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 31077475604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32363470944).

31077475604 is an abundant number, since it is smaller than the sum of its proper divisors (33649466284).

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

31077475604 is a wasteful number, since it uses less digits than its factorization.

31077475604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19965 (or 19956 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 31077475604 in words is "thirty-one billion, seventy-seven million, four hundred seventy-five thousand, six hundred four".