311202871157 has 2 divisors, whose sum is σ = 311202871158. Its totient is φ = 311202871156.

The previous prime is 311202871141. The next prime is 311202871159. The reversal of 311202871157 is 751178202113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204743580196 + 106459290961 = 452486^2 + 326281^2 .

It is a cyclic number.

It is not a de Polignac number, because 311202871157 - 2⁴ = 311202871141 is a prime.

It is a super-3 number, since 3×311202871157³ (a number of 35 digits) contains 333 as substring.

Together with 311202871159, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311202871157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311202871159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155601435578 + 155601435579.

It is an arithmetic number, because the mean of its divisors is an integer number (155601435579).

Almost surely, 2^311202871157 is an apocalyptic number.

It is an amenable number.

311202871157 is a deficient number, since it is larger than the sum of its proper divisors (1).

311202871157 is an equidigital number, since it uses as much as digits as its factorization.

311202871157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 38.

The spelling of 311202871157 in words is "three hundred eleven billion, two hundred two million, eight hundred seventy-one thousand, one hundred fifty-seven".