313909513 has 8 divisors (see below), whose sum is σ = 320200776. Its totient is φ = 307632000.

The previous prime is 313909511. The next prime is 313909523. The reversal of 313909513 is 315909313.

It can be written as a sum of positive squares in 4 ways, for example, as 185041609 + 128867904 = 13603^2 + 11352^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313909513 - 2¹ = 313909511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313909511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51213 + ... + 57013.

It is an arithmetic number, because the mean of its divisors is an integer number (40025097).

Almost surely, 2^313909513 is an apocalyptic number.

It is an amenable number.

313909513 is a deficient number, since it is larger than the sum of its proper divisors (6291263).

313909513 is a wasteful number, since it uses less digits than its factorization.

313909513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875.

The product of its (nonzero) digits is 10935, while the sum is 34.

The square root of 313909513 is about 17717.4917242820. The cubic root of 313909513 is about 679.6231425386.

The spelling of 313909513 in words is "three hundred thirteen million, nine hundred nine thousand, five hundred thirteen".