311668065 has 12 divisors (see below), whose sum is σ = 540224724. Its totient is φ = 166222944.

The previous prime is 311668051. The next prime is 311668069. The reversal of 311668065 is 560866113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 183548304 + 128119761 = 13548^2 + 11319^2 .

It is not a de Polignac number, because 311668065 - 2¹⁸ = 311405921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311668069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3462934 + ... + 3463023.

It is an arithmetic number, because the mean of its divisors is an integer number (45018727).

Almost surely, 2^311668065 is an apocalyptic number.

It is an amenable number.

311668065 is a deficient number, since it is larger than the sum of its proper divisors (228556659).

311668065 is a wasteful number, since it uses less digits than its factorization.

311668065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6925968 (or 6925965 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 311668065 is about 17654.1231727888. The cubic root of 311668065 is about 678.0016772350.

The spelling of 311668065 in words is "three hundred eleven million, six hundred sixty-eight thousand, sixty-five".