31081086376 has 32 divisors (see below), whose sum is σ = 59591184840. Its totient is φ = 15192223488.

The previous prime is 31081086343. The next prime is 31081086437. The reversal of 31081086376 is 67368018013.

It can be written as a sum of positive squares in 4 ways, for example, as 30739206276 + 341880100 = 175326^2 + 18490^2 .

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, 14871 + ... + 249766.

Almost surely, 2^31081086376 is an apocalyptic number.

It is an amenable number.

31081086376 is a deficient number, since it is larger than the sum of its proper divisors (28510098464).

31081086376 is a wasteful number, since it uses less digits than its factorization.

31081086376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264973 (or 264969 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 31081086376 in words is "thirty-one billion, eighty-one million, eighty-six thousand, three hundred seventy-six".