313929509 has 2 divisors, whose sum is σ = 313929510. Its totient is φ = 313929508.

The previous prime is 313929503. The next prime is 313929523. The reversal of 313929509 is 905929313.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262764100 + 51165409 = 16210^2 + 7153^2 .

It is a cyclic number.

It is not a de Polignac number, because 313929509 - 2¹⁶ = 313863973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313929503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156964754 + 156964755.

It is an arithmetic number, because the mean of its divisors is an integer number (156964755).

Almost surely, 2^313929509 is an apocalyptic number.

It is an amenable number.

313929509 is a deficient number, since it is larger than the sum of its proper divisors (1).

313929509 is an equidigital number, since it uses as much as digits as its factorization.

313929509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 313929509 is about 17718.0560163919. The cubic root of 313929509 is about 679.6375728710.

The spelling of 313929509 in words is "three hundred thirteen million, nine hundred twenty-nine thousand, five hundred nine".