311330214457 has 2 divisors, whose sum is σ = 311330214458. Its totient is φ = 311330214456.

The previous prime is 311330214407. The next prime is 311330214479. The reversal of 311330214457 is 754412033113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220283790336 + 91046424121 = 469344^2 + 301739^2 .

It is a cyclic number.

It is not a de Polignac number, because 311330214457 - 2²³ = 311321825849 is a prime.

It is a super-2 number, since 2×311330214457² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311330214407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155665107228 + 155665107229.

It is an arithmetic number, because the mean of its divisors is an integer number (155665107229).

Almost surely, 2^311330214457 is an apocalyptic number.

It is an amenable number.

311330214457 is a deficient number, since it is larger than the sum of its proper divisors (1).

311330214457 is an equidigital number, since it uses as much as digits as its factorization.

311330214457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 311330214457 in words is "three hundred eleven billion, three hundred thirty million, two hundred fourteen thousand, four hundred fifty-seven".