31504121044 has 12 divisors (see below), whose sum is σ = 60144231168. Its totient is φ = 14320055000.

The previous prime is 31504121023. The next prime is 31504121057. The reversal of 31504121044 is 44012140513.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358001332 + ... + 358001419.

It is an arithmetic number, because the mean of its divisors is an integer number (5012019264).

Almost surely, 2^31504121044 is an apocalyptic number.

It is an amenable number.

31504121044 is a deficient number, since it is larger than the sum of its proper divisors (28640110124).

31504121044 is a wasteful number, since it uses less digits than its factorization.

31504121044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716002766 (or 716002764 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 31504121044 its reverse (44012140513), we get a palindrome (75516261557).

The spelling of 31504121044 in words is "thirty-one billion, five hundred four million, one hundred twenty-one thousand, forty-four".