31021408794 has 32 divisors (see below), whose sum is σ = 65349506880. Its totient is φ = 9790042752.

The previous prime is 31021408793. The next prime is 31021408811. The reversal of 31021408794 is 49780412013.

It is not an unprimeable number, because it can be changed into a prime (31021408793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96862 + ... + 267254.

It is an arithmetic number, because the mean of its divisors is an integer number (2042172090).

Almost surely, 2^31021408794 is an apocalyptic number.

31021408794 is an abundant number, since it is smaller than the sum of its proper divisors (34328098086).

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

31021408794 is a wasteful number, since it uses less digits than its factorization.

31021408794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172014.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 31021408794 in words is "thirty-one billion, twenty-one million, four hundred eight thousand, seven hundred ninety-four".