311436923 has 16 divisors (see below), whose sum is σ = 396702720. Its totient is φ = 238018176.

The previous prime is 311436919. The next prime is 311436947. The reversal of 311436923 is 329634113.

It is a cyclic number.

It is not a de Polignac number, because 311436923 - 2² = 311436919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311436923.

It is not an unprimeable number, because it can be changed into a prime (311436913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66611 + ... + 71132.

It is an arithmetic number, because the mean of its divisors is an integer number (24793920).

Almost surely, 2^311436923 is an apocalyptic number.

311436923 is a deficient number, since it is larger than the sum of its proper divisors (85265797).

311436923 is a wasteful number, since it uses less digits than its factorization.

311436923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137786.

The product of its digits is 11664, while the sum is 32.

The square root of 311436923 is about 17647.5755558660. The cubic root of 311436923 is about 677.8340272695.

The spelling of 311436923 in words is "three hundred eleven million, four hundred thirty-six thousand, nine hundred twenty-three".