311668711 has 2 divisors, whose sum is σ = 311668712. Its totient is φ = 311668710.

The previous prime is 311668661. The next prime is 311668717. The reversal of 311668711 is 117866113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311668711 - 2⁹ = 311668199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311668717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155834355 + 155834356.

It is an arithmetic number, because the mean of its divisors is an integer number (155834356).

Almost surely, 2^311668711 is an apocalyptic number.

311668711 is a deficient number, since it is larger than the sum of its proper divisors (1).

311668711 is an equidigital number, since it uses as much as digits as its factorization.

311668711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 34.

The square root of 311668711 is about 17654.1414687886. The cubic root of 311668711 is about 678.0021456701.

The spelling of 311668711 in words is "three hundred eleven million, six hundred sixty-eight thousand, seven hundred eleven".