311361311 has 2 divisors, whose sum is σ = 311361312. Its totient is φ = 311361310.

The previous prime is 311361293. The next prime is 311361343. The reversal of 311361311 is 113163113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311361311 - 2⁶ = 311361247 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311361361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155680655 + 155680656.

It is an arithmetic number, because the mean of its divisors is an integer number (155680656).

Almost surely, 2^311361311 is an apocalyptic number.

311361311 is a deficient number, since it is larger than the sum of its proper divisors (1).

311361311 is an equidigital number, since it uses as much as digits as its factorization.

311361311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 20.

The square root of 311361311 is about 17645.4331485515. The cubic root of 311361311 is about 677.7791670062.

The spelling of 311361311 in words is "three hundred eleven million, three hundred sixty-one thousand, three hundred eleven".