311871185107 has 2 divisors, whose sum is σ = 311871185108. Its totient is φ = 311871185106.

The previous prime is 311871185071. The next prime is 311871185167. The reversal of 311871185107 is 701581178113.

Together with previous prime (311871185071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311871185107 - 2⁷ = 311871184979 is a prime.

It is a super-2 number, since 2×311871185107² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311871185167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155935592553 + 155935592554.

It is an arithmetic number, because the mean of its divisors is an integer number (155935592554).

Almost surely, 2^311871185107 is an apocalyptic number.

311871185107 is a deficient number, since it is larger than the sum of its proper divisors (1).

311871185107 is an equidigital number, since it uses as much as digits as its factorization.

311871185107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 43.

It can be divided in two parts, 31187118 and 5107, that added together give a square (31192225 = 5585²).

The spelling of 311871185107 in words is "three hundred eleven billion, eight hundred seventy-one million, one hundred eighty-five thousand, one hundred seven".