31000440244 has 48 divisors (see below), whose sum is σ = 57884037120. Its totient is φ = 14496150240.

The previous prime is 31000440239. The next prime is 31000440301. The reversal of 31000440244 is 44204400013.

It is a super-2 number, since 2×31000440244² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727899 + ... + 769309.

It is an arithmetic number, because the mean of its divisors is an integer number (1205917440).

Almost surely, 2^31000440244 is an apocalyptic number.

It is an amenable number.

31000440244 is a deficient number, since it is larger than the sum of its proper divisors (26883596876).

31000440244 is a wasteful number, since it uses less digits than its factorization.

31000440244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41620 (or 41618 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 31000440244 its reverse (44204400013), we get a palindrome (75204840257).

The spelling of 31000440244 in words is "thirty-one billion, four hundred forty thousand, two hundred forty-four".