311111112089 has 2 divisors, whose sum is σ = 311111112090. Its totient is φ = 311111112088.

The previous prime is 311111112077. The next prime is 311111112133. The reversal of 311111112089 is 980211111113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306832905625 + 4278206464 = 553925^2 + 65408^2 .

It is a cyclic number.

It is not a de Polignac number, because 311111112089 - 2⁴ = 311111112073 is a prime.

It is not a weakly prime, because it can be changed into another prime (311111112019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155555556044 + 155555556045.

It is an arithmetic number, because the mean of its divisors is an integer number (155555556045).

Almost surely, 2^311111112089 is an apocalyptic number.

It is an amenable number.

311111112089 is a deficient number, since it is larger than the sum of its proper divisors (1).

311111112089 is an equidigital number, since it uses as much as digits as its factorization.

311111112089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 29.

The spelling of 311111112089 in words is "three hundred eleven billion, one hundred eleven million, one hundred twelve thousand, eighty-nine".