313981613 has 8 divisors (see below), whose sum is σ = 346653216. Its totient is φ = 281998000.

The previous prime is 313981607. The next prime is 313981621. The reversal of 313981613 is 316189313.

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 313981613 - 2²⁰ = 312933037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313981693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171038 + ... + 172863.

It is an arithmetic number, because the mean of its divisors is an integer number (43331652).

Almost surely, 2^313981613 is an apocalyptic number.

It is an amenable number.

313981613 is a deficient number, since it is larger than the sum of its proper divisors (32671603).

313981613 is a wasteful number, since it uses less digits than its factorization.

313981613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343995.

The product of its digits is 11664, while the sum is 35.

The square root of 313981613 is about 17719.5263198540. The cubic root of 313981613 is about 679.6751714147.

The spelling of 313981613 in words is "three hundred thirteen million, nine hundred eighty-one thousand, six hundred thirteen".