313121021299 has 2 divisors, whose sum is σ = 313121021300. Its totient is φ = 313121021298.

The previous prime is 313121021287. The next prime is 313121021309. The reversal of 313121021299 is 992120121313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313121021299 - 2²³ = 313112632691 is a prime.

It is not a weakly prime, because it can be changed into another prime (313121021209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156560510649 + 156560510650.

It is an arithmetic number, because the mean of its divisors is an integer number (156560510650).

Almost surely, 2^313121021299 is an apocalyptic number.

313121021299 is a deficient number, since it is larger than the sum of its proper divisors (1).

313121021299 is an equidigital number, since it uses as much as digits as its factorization.

313121021299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 313121021299 in words is "three hundred thirteen billion, one hundred twenty-one million, twenty-one thousand, two hundred ninety-nine".