31004792890 has 16 divisors (see below), whose sum is σ = 55811764008. Its totient is φ = 12401220096.

The previous prime is 31004792813. The next prime is 31004792927. The reversal of 31004792890 is 9829740013.

It can be written as a sum of positive squares in 4 ways, for example, as 12070757689 + 18934035201 = 109867^2 + 137601^2 .

It is a super-2 number, since 2×31004792890² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124054 + ... + 278206.

Almost surely, 2^31004792890 is an apocalyptic number.

31004792890 is a deficient number, since it is larger than the sum of its proper divisors (24806971118).

31004792890 is a wasteful number, since it uses less digits than its factorization.

31004792890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174273.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 31004792890 in words is "thirty-one billion, four million, seven hundred ninety-two thousand, eight hundred ninety".