311645761111 has 2 divisors, whose sum is σ = 311645761112. Its totient is φ = 311645761110.

The previous prime is 311645761079. The next prime is 311645761213. The reversal of 311645761111 is 111167546113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311645761111 - 2⁵ = 311645761079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311645762111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155822880555 + 155822880556.

It is an arithmetic number, because the mean of its divisors is an integer number (155822880556).

Almost surely, 2^311645761111 is an apocalyptic number.

311645761111 is a deficient number, since it is larger than the sum of its proper divisors (1).

311645761111 is an equidigital number, since it uses as much as digits as its factorization.

311645761111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 37.

The spelling of 311645761111 in words is "three hundred eleven billion, six hundred forty-five million, seven hundred sixty-one thousand, one hundred eleven".