313023111209 has 2 divisors, whose sum is σ = 313023111210. Its totient is φ = 313023111208.

The previous prime is 313023111187. The next prime is 313023111211. The reversal of 313023111209 is 902111320313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308083832809 + 4939278400 = 555053^2 + 70280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313023111209 is a prime.

Together with 313023111211, 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 (313023113209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156511555604 + 156511555605.

It is an arithmetic number, because the mean of its divisors is an integer number (156511555605).

Almost surely, 2^313023111209 is an apocalyptic number.

It is an amenable number.

313023111209 is a deficient number, since it is larger than the sum of its proper divisors (1).

313023111209 is an equidigital number, since it uses as much as digits as its factorization.

313023111209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 313023111209 in words is "three hundred thirteen billion, twenty-three million, one hundred eleven thousand, two hundred nine".