311729725427 has 2 divisors, whose sum is σ = 311729725428. Its totient is φ = 311729725426.

The previous prime is 311729725399. The next prime is 311729725451. The reversal of 311729725427 is 724527927113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311729725427 - 2⁸ = 311729725171 is a prime.

It is not a weakly prime, because it can be changed into another prime (311729725477) 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, 155864862713 + 155864862714.

It is an arithmetic number, because the mean of its divisors is an integer number (155864862714).

Almost surely, 2^311729725427 is an apocalyptic number.

311729725427 is a deficient number, since it is larger than the sum of its proper divisors (1).

311729725427 is an equidigital number, since it uses as much as digits as its factorization.

311729725427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 50.

The spelling of 311729725427 in words is "three hundred eleven billion, seven hundred twenty-nine million, seven hundred twenty-five thousand, four hundred twenty-seven".