313021129 has 2 divisors, whose sum is σ = 313021130. Its totient is φ = 313021128.

The previous prime is 313021097. The next prime is 313021133. The reversal of 313021129 is 921120313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311593104 + 1428025 = 17652^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 313021129 - 2⁵ = 313021097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313021139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156510564 + 156510565.

It is an arithmetic number, because the mean of its divisors is an integer number (156510565).

Almost surely, 2^313021129 is an apocalyptic number.

It is an amenable number.

313021129 is a deficient number, since it is larger than the sum of its proper divisors (1).

313021129 is an equidigital number, since it uses as much as digits as its factorization.

313021129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 313021129 is about 17692.4031437224. The cubic root of 313021129 is about 678.9814111226.

The spelling of 313021129 in words is "three hundred thirteen million, twenty-one thousand, one hundred twenty-nine".