313121099 has 2 divisors, whose sum is σ = 313121100. Its totient is φ = 313121098.

The previous prime is 313121087. The next prime is 313121101. The reversal of 313121099 is 990121313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313121099 is a prime.

Together with 313121101, 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 (313124099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156560549 + 156560550.

It is an arithmetic number, because the mean of its divisors is an integer number (156560550).

Almost surely, 2^313121099 is an apocalyptic number.

313121099 is a deficient number, since it is larger than the sum of its proper divisors (1).

313121099 is an equidigital number, since it uses as much as digits as its factorization.

313121099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 313121099 is about 17695.2281420727. The cubic root of 313121099 is about 679.0536858464.

The spelling of 313121099 in words is "three hundred thirteen million, one hundred twenty-one thousand, ninety-nine".