311113121239 has 2 divisors, whose sum is σ = 311113121240. Its totient is φ = 311113121238.

The previous prime is 311113121213. The next prime is 311113121243. The reversal of 311113121239 is 932121311113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311113121239 - 2³⁷ = 173674167767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311113121279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155556560619 + 155556560620.

It is an arithmetic number, because the mean of its divisors is an integer number (155556560620).

Almost surely, 2^311113121239 is an apocalyptic number.

311113121239 is a deficient number, since it is larger than the sum of its proper divisors (1).

311113121239 is an equidigital number, since it uses as much as digits as its factorization.

311113121239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 28.

The spelling of 311113121239 in words is "three hundred eleven billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred thirty-nine".