313220009 has 2 divisors, whose sum is σ = 313220010. Its totient is φ = 313220008.

The previous prime is 313219969. The next prime is 313220021. The reversal of 313220009 is 900022313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213160000 + 100060009 = 14600^2 + 10003^2 .

It is a cyclic number.

It is not a de Polignac number, because 313220009 - 2²⁴ = 296442793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313220029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156610004 + 156610005.

It is an arithmetic number, because the mean of its divisors is an integer number (156610005).

Almost surely, 2^313220009 is an apocalyptic number.

It is an amenable number.

313220009 is a deficient number, since it is larger than the sum of its proper divisors (1).

313220009 is an equidigital number, since it uses as much as digits as its factorization.

313220009 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 20.

The square root of 313220009 is about 17698.0227426682. The cubic root of 313220009 is about 679.1251790901.

The spelling of 313220009 in words is "three hundred thirteen million, two hundred twenty thousand, nine".