313803913 has 6 divisors (see below), whose sum is σ = 320624906. Its totient is φ = 307125072.

The previous prime is 313803871. The next prime is 313803961. The reversal of 313803913 is 319308313.

It can be written as a sum of positive squares in only one way, i.e., 159845449 + 153958464 = 12643^2 + 12408^2 .

It is a de Polignac number, because none of the positive numbers 2^k-313803913 is a prime.

It is a super-2 number, since 2×313803913² = 196945791628223138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313803013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68820 + ... + 73237.

Almost surely, 2^313803913 is an apocalyptic number.

It is an amenable number.

313803913 is a deficient number, since it is larger than the sum of its proper divisors (6820993).

313803913 is an equidigital number, since it uses as much as digits as its factorization.

313803913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142151 (or 142104 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 313803913 is about 17714.5113678024. The cubic root of 313803913 is about 679.5469249769.

The spelling of 313803913 in words is "three hundred thirteen million, eight hundred three thousand, nine hundred thirteen".