31339404 has 36 divisors (see below), whose sum is σ = 79399320. Its totient is φ = 10422720.

The previous prime is 31339403. The next prime is 31339423. The reversal of 31339404 is 40493313.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (31339403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23064 + ... + 24384.

Almost surely, 2^31339404 is an apocalyptic number.

It is an amenable number.

31339404 is an abundant number, since it is smaller than the sum of its proper divisors (48059916).

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

31339404 is a wasteful number, since it uses less digits than its factorization.

31339404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1985 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 31339404 is about 5598.1607693956. The cubic root of 31339404 is about 315.2803550917.

The spelling of 31339404 in words is "thirty-one million, three hundred thirty-nine thousand, four hundred four".