31073081858 has 16 divisors (see below), whose sum is σ = 57365689920. Its totient is φ = 12292647696.

The previous prime is 31073081843. The next prime is 31073081867. The reversal of 31073081858 is 85818037013.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 85365428 + ... + 85365791.

It is an arithmetic number, because the mean of its divisors is an integer number (3585355620).

Almost surely, 2^31073081858 is an apocalyptic number.

31073081858 is a deficient number, since it is larger than the sum of its proper divisors (26292608062).

31073081858 is a wasteful number, since it uses less digits than its factorization.

31073081858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170731241.

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 31073081858 in words is "thirty-one billion, seventy-three million, eighty-one thousand, eight hundred fifty-eight".