311877695429 has 2 divisors, whose sum is σ = 311877695430. Its totient is φ = 311877695428.

The previous prime is 311877695401. The next prime is 311877695443. The reversal of 311877695429 is 924596778113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303656102500 + 8221592929 = 551050^2 + 90673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311877695429 is a prime.

It is a super-2 number, since 2×311877695429² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311877695329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155938847714 + 155938847715.

It is an arithmetic number, because the mean of its divisors is an integer number (155938847715).

Almost surely, 2^311877695429 is an apocalyptic number.

It is an amenable number.

311877695429 is a deficient number, since it is larger than the sum of its proper divisors (1).

311877695429 is an equidigital number, since it uses as much as digits as its factorization.

311877695429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 62.

The spelling of 311877695429 in words is "three hundred eleven billion, eight hundred seventy-seven million, six hundred ninety-five thousand, four hundred twenty-nine".