31393074 has 16 divisors (see below), whose sum is σ = 63851040. Its totient is φ = 10286880.

The previous prime is 31393069. The next prime is 31393081. The reversal of 31393074 is 47039313.

It is an unprimeable number.

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, 43987 + ... + 44694.

It is an arithmetic number, because the mean of its divisors is an integer number (3990690).

Almost surely, 2^31393074 is an apocalyptic number.

31393074 is an abundant number, since it is smaller than the sum of its proper divisors (32457966).

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

31393074 is a wasteful number, since it uses less digits than its factorization.

31393074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88745.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 31393074 is about 5602.9522575157. The cubic root of 31393074 is about 315.4602292472.

The spelling of 31393074 in words is "thirty-one million, three hundred ninety-three thousand, seventy-four".