31949440844 has 12 divisors (see below), whose sum is σ = 57715119168. Its totient is φ = 15459406800.

The previous prime is 31949440801. The next prime is 31949440849. The reversal of 31949440844 is 44804494913.

It is a junction number, because it is equal to n+sod(n) for n = 31949440792 and 31949440801.

It is not an unprimeable number, because it can be changed into a prime (31949440849) 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, 128828267 + ... + 128828514.

It is an arithmetic number, because the mean of its divisors is an integer number (4809593264).

Almost surely, 2^31949440844 is an apocalyptic number.

It is an amenable number.

31949440844 is a deficient number, since it is larger than the sum of its proper divisors (25765678324).

31949440844 is a wasteful number, since it uses less digits than its factorization.

31949440844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257656816 (or 257656814 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 31949440844 in words is "thirty-one billion, nine hundred forty-nine million, four hundred forty thousand, eight hundred forty-four".