31149456 has 40 divisors (see below), whose sum is σ = 86661120. Its totient is φ = 9584256.

The previous prime is 31149431. The next prime is 31149473. The reversal of 31149456 is 65494113.

It is a congruent number.

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, 24336 + ... + 25583.

It is an arithmetic number, because the mean of its divisors is an integer number (2166528).

Almost surely, 2^31149456 is an apocalyptic number.

It is an amenable number.

31149456 is an abundant number, since it is smaller than the sum of its proper divisors (55511664).

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

31149456 is a wasteful number, since it uses less digits than its factorization.

31149456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49943 (or 49937 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 31149456 is about 5581.1697698601. The cubic root of 31149456 is about 314.6420928654.

The spelling of 31149456 in words is "thirty-one million, one hundred forty-nine thousand, four hundred fifty-six".