313616291 has 4 divisors (see below), whose sum is σ = 314294112. Its totient is φ = 312938472.

The previous prime is 313616287. The next prime is 313616309. The reversal of 313616291 is 192616313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313616291 - 2² = 313616287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313616231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338216 + ... + 339141.

It is an arithmetic number, because the mean of its divisors is an integer number (78573528).

Almost surely, 2^313616291 is an apocalyptic number.

313616291 is a deficient number, since it is larger than the sum of its proper divisors (677821).

313616291 is an equidigital number, since it uses as much as digits as its factorization.

313616291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677820.

The product of its digits is 5832, while the sum is 32.

The square root of 313616291 is about 17709.2148611959. The cubic root of 313616291 is about 679.4114652556.

The spelling of 313616291 in words is "three hundred thirteen million, six hundred sixteen thousand, two hundred ninety-one".