311142543377 has 2 divisors, whose sum is σ = 311142543378. Its totient is φ = 311142543376.

The previous prime is 311142543277. The next prime is 311142543379. The reversal of 311142543377 is 773345241113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214595003536 + 96547539841 = 463244^2 + 310721^2 .

It is a cyclic number.

It is not a de Polignac number, because 311142543377 - 2¹⁰ = 311142542353 is a prime.

Together with 311142543379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (311142543379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155571271688 + 155571271689.

It is an arithmetic number, because the mean of its divisors is an integer number (155571271689).

Almost surely, 2^311142543377 is an apocalyptic number.

It is an amenable number.

311142543377 is a deficient number, since it is larger than the sum of its proper divisors (1).

311142543377 is an equidigital number, since it uses as much as digits as its factorization.

311142543377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 41.

The spelling of 311142543377 in words is "three hundred eleven billion, one hundred forty-two million, five hundred forty-three thousand, three hundred seventy-seven".