311320303097 has 2 divisors, whose sum is σ = 311320303098. Its totient is φ = 311320303096.

The previous prime is 311320303093. The next prime is 311320303157. The reversal of 311320303097 is 790303023113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198324152896 + 112996150201 = 445336^2 + 336149^2 .

It is a cyclic number.

It is not a de Polignac number, because 311320303097 - 2² = 311320303093 is a prime.

It is a super-2 number, since 2×311320303097² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311320303093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155660151548 + 155660151549.

It is an arithmetic number, because the mean of its divisors is an integer number (155660151549).

Almost surely, 2^311320303097 is an apocalyptic number.

It is an amenable number.

311320303097 is a deficient number, since it is larger than the sum of its proper divisors (1).

311320303097 is an equidigital number, since it uses as much as digits as its factorization.

311320303097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 32.

The spelling of 311320303097 in words is "three hundred eleven billion, three hundred twenty million, three hundred three thousand, ninety-seven".