31876590309681 has 16 divisors (see below), whose sum is σ = 45772392375360. Its totient is φ = 19615986945600.

The previous prime is 31876590309679. The next prime is 31876590309689. The reversal of 31876590309681 is 18690309567813.

It is not a de Polignac number, because 31876590309681 - 2¹ = 31876590309679 is a prime.

It is a super-2 number, since 2×31876590309681² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31876590309689) 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, 5774151 + ... + 9853628.

It is an arithmetic number, because the mean of its divisors is an integer number (2860774523460).

Almost surely, 2^{31876590309681} is an apocalyptic number.

It is an amenable number.

31876590309681 is a deficient number, since it is larger than the sum of its proper divisors (13895802065679).

31876590309681 is a wasteful number, since it uses less digits than its factorization.

31876590309681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15680096.

The product of its (nonzero) digits is 58786560, while the sum is 66.

The spelling of 31876590309681 in words is "thirty-one trillion, eight hundred seventy-six billion, five hundred ninety million, three hundred nine thousand, six hundred eighty-one".