31047944 has 16 divisors (see below), whose sum is σ = 58675200. Its totient is φ = 15401232.

The previous prime is 31047943. The next prime is 31047959. The reversal of 31047944 is 44974013.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31047944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31047943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14264 + ... + 16295.

It is an arithmetic number, because the mean of its divisors is an integer number (3667200).

Almost surely, 2^31047944 is an apocalyptic number.

It is an amenable number.

31047944 is a deficient number, since it is larger than the sum of its proper divisors (27627256).

31047944 is a wasteful number, since it uses less digits than its factorization.

31047944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30692 (or 30688 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 31047944 is about 5572.0681977162. The cubic root of 31047944 is about 314.2999284402.

The spelling of 31047944 in words is "thirty-one million, forty-seven thousand, nine hundred forty-four".