31120394 has 16 divisors (see below), whose sum is σ = 48093696. Its totient is φ = 15093600.

The previous prime is 31120379. The next prime is 31120417. The reversal of 31120394 is 49302113.

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, 14669 + ... + 16655.

It is an arithmetic number, because the mean of its divisors is an integer number (3005856).

Almost surely, 2^31120394 is an apocalyptic number.

31120394 is a deficient number, since it is larger than the sum of its proper divisors (16973302).

31120394 is a wasteful number, since it uses less digits than its factorization.

31120394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 31120394 is about 5578.5655862417. The cubic root of 31120394 is about 314.5442102168.

The spelling of 31120394 in words is "thirty-one million, one hundred twenty thousand, three hundred ninety-four".