311933645986 has 8 divisors (see below), whose sum is σ = 468765351324. Its totient is φ = 155678528880.

The previous prime is 311933645981. The next prime is 311933646001. The reversal of 311933645986 is 689546339113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 292444089961 + 19489556025 = 540781^2 + 139605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 311933645986.

It is not an unprimeable number, because it can be changed into a prime (311933645981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144145705 + ... + 144147868.

Almost surely, 2^311933645986 is an apocalyptic number.

311933645986 is a deficient number, since it is larger than the sum of its proper divisors (156831705338).

311933645986 is a wasteful number, since it uses less digits than its factorization.

311933645986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288294116.

The product of its digits is 12597120, while the sum is 58.

The spelling of 311933645986 in words is "three hundred eleven billion, nine hundred thirty-three million, six hundred forty-five thousand, nine hundred eighty-six".