31319004 has 24 divisors (see below), whose sum is σ = 73790080. Its totient is φ = 10337904.

The previous prime is 31318999. The next prime is 31319017. The reversal of 31319004 is 40091313.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 11434 + ... + 13905.

Almost surely, 2^31319004 is an apocalyptic number.

It is an amenable number.

31319004 is an abundant number, since it is smaller than the sum of its proper divisors (42471076).

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

31319004 is a wasteful number, since it uses less digits than its factorization.

31319004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25449 (or 25447 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 31319004 is about 5596.3384458054. The cubic root of 31319004 is about 315.2119309518.

The spelling of 31319004 in words is "thirty-one million, three hundred nineteen thousand, four".