31613404 has 24 divisors (see below), whose sum is σ = 59170608. Its totient is φ = 14726400.

The previous prime is 31613401. The next prime is 31613411. The reversal of 31613404 is 40431613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31613401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4567 + ... + 9169.

It is an arithmetic number, because the mean of its divisors is an integer number (2465442).

Almost surely, 2^31613404 is an apocalyptic number.

31613404 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31613404 is a deficient number, since it is larger than the sum of its proper divisors (27557204).

31613404 is a wasteful number, since it uses less digits than its factorization.

31613404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725 (or 4723 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 31613404 is about 5622.5798349156. The cubic root of 31613404 is about 316.1965209241.

The spelling of 31613404 in words is "thirty-one million, six hundred thirteen thousand, four hundred four".