311390772680 has 32 divisors (see below), whose sum is σ = 754523796600. Its totient is φ = 114975054336.

The previous prime is 311390772677. The next prime is 311390772689. The reversal of 311390772680 is 86277093113.

It can be written as a sum of positive squares in 4 ways, for example, as 183600252196 + 127790520484 = 428486^2 + 357478^2 .

It is not an unprimeable number, because it can be changed into a prime (311390772689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299413685 + ... + 299414724.

Almost surely, 2^311390772680 is an apocalyptic number.

It is an amenable number.

311390772680 is an abundant number, since it is smaller than the sum of its proper divisors (443133023920).

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

311390772680 is a wasteful number, since it uses less digits than its factorization.

311390772680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598828433 (or 598828429 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 311390772680 in words is "three hundred eleven billion, three hundred ninety million, seven hundred seventy-two thousand, six hundred eighty".