313912009 has 2 divisors, whose sum is σ = 313912010. Its totient is φ = 313912008.

The previous prime is 313911973. The next prime is 313912019. The reversal of 313912009 is 900219313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214710409 + 99201600 = 14653^2 + 9960^2 .

It is a cyclic number.

It is not a de Polignac number, because 313912009 - 2⁷ = 313911881 is a prime.

It is not a weakly prime, because it can be changed into another prime (313912019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156956004 + 156956005.

It is an arithmetic number, because the mean of its divisors is an integer number (156956005).

Almost surely, 2^313912009 is an apocalyptic number.

It is an amenable number.

313912009 is a deficient number, since it is larger than the sum of its proper divisors (1).

313912009 is an equidigital number, since it uses as much as digits as its factorization.

313912009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 313912009 is about 17717.5621630065. The cubic root of 313912009 is about 679.6249438378.

The spelling of 313912009 in words is "three hundred thirteen million, nine hundred twelve thousand, nine".