311162111111 has 2 divisors, whose sum is σ = 311162111112. Its totient is φ = 311162111110.

The previous prime is 311162111107. The next prime is 311162111147. The reversal of 311162111111 is 111111261113.

It is a m-pointer prime, because the next prime (311162111147) can be obtained adding 311162111111 to its product of digits (36).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311162111111 - 2² = 311162111107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311162113111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155581055555 + 155581055556.

It is an arithmetic number, because the mean of its divisors is an integer number (155581055556).

Almost surely, 2^311162111111 is an apocalyptic number.

311162111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

311162111111 is an equidigital number, since it uses as much as digits as its factorization.

311162111111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 20.

Adding to 311162111111 its reverse (111111261113), we get a palindrome (422273372224).

The spelling of 311162111111 in words is "three hundred eleven billion, one hundred sixty-two million, one hundred eleven thousand, one hundred eleven".