311768685 has 24 divisors (see below), whose sum is σ = 549563040. Its totient is φ = 163456992.

The previous prime is 311768669. The next prime is 311768687. The reversal of 311768685 is 586867113.

It is not a de Polignac number, because 311768685 - 2⁴ = 311768669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 311768685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311768687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56059 + ... + 61368.

It is an arithmetic number, because the mean of its divisors is an integer number (22898460).

Almost surely, 2^311768685 is an apocalyptic number.

It is an amenable number.

311768685 is a deficient number, since it is larger than the sum of its proper divisors (237794355).

311768685 is a wasteful number, since it uses less digits than its factorization.

311768685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117497 (or 117494 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 311768685 is about 17656.9727020234. The cubic root of 311768685 is about 678.0746321896.

The spelling of 311768685 in words is "three hundred eleven million, seven hundred sixty-eight thousand, six hundred eighty-five".