31042831880 has 16 divisors (see below), whose sum is σ = 69846371820. Its totient is φ = 12417132736.

The previous prime is 31042831867. The next prime is 31042831903. The reversal of 31042831880 is 8813824013.

It can be written as a sum of positive squares in 2 ways, for example, as 31018958884 + 23872996 = 176122^2 + 4886^2 .

It is a super-2 number, since 2×31042831880² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 388035359 + ... + 388035438.

Almost surely, 2^31042831880 is an apocalyptic number.

It is an amenable number.

31042831880 is an abundant number, since it is smaller than the sum of its proper divisors (38803539940).

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

31042831880 is a wasteful number, since it uses less digits than its factorization.

31042831880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776070808 (or 776070804 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 31042831880 in words is "thirty-one billion, forty-two million, eight hundred thirty-one thousand, eight hundred eighty".