311344091 has 2 divisors, whose sum is σ = 311344092. Its totient is φ = 311344090.

The previous prime is 311344081. The next prime is 311344139. The reversal of 311344091 is 190443113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311344091 - 2¹⁴ = 311327707 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311344091.

It is not a weakly prime, because it can be changed into another prime (311344021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155672045 + 155672046.

It is an arithmetic number, because the mean of its divisors is an integer number (155672046).

Almost surely, 2^311344091 is an apocalyptic number.

311344091 is a deficient number, since it is larger than the sum of its proper divisors (1).

311344091 is an equidigital number, since it uses as much as digits as its factorization.

311344091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 311344091 is about 17644.9451968545. The cubic root of 311344091 is about 677.7666717989.

The spelling of 311344091 in words is "three hundred eleven million, three hundred forty-four thousand, ninety-one".