31066904 has 32 divisors (see below), whose sum is σ = 64754640. Its totient is φ = 13852800.

The previous prime is 31066883. The next prime is 31066907. The reversal of 31066904 is 40966013.

It is a pancake number, because a pancake can be divided into 31066904 parts by 7882 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31066907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334 + ... + 7994.

Almost surely, 2^31066904 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 31066904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32377320).

31066904 is an abundant number, since it is smaller than the sum of its proper divisors (33687736).

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

31066904 is a wasteful number, since it uses less digits than its factorization.

31066904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6731 (or 6727 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 31066904 is about 5573.7692811956. The cubic root of 31066904 is about 314.3638931055.

The spelling of 31066904 in words is "thirty-one million, sixty-six thousand, nine hundred four".