313616261 has 8 divisors (see below), whose sum is σ = 377282880. Its totient is φ = 254665728.

The previous prime is 313616231. The next prime is 313616269. The reversal of 313616261 is 162616313.

It is a happy number.

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 313616261 - 2⁶ = 313616197 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 (313616269) 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, 1178876 + ... + 1179141.

It is an arithmetic number, because the mean of its divisors is an integer number (47160360).

Almost surely, 2^313616261 is an apocalyptic number.

It is an amenable number.

313616261 is a deficient number, since it is larger than the sum of its proper divisors (63666619).

313616261 is a wasteful number, since it uses less digits than its factorization.

313616261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358043.

The product of its digits is 3888, while the sum is 29.

The square root of 313616261 is about 17709.2140141792. The cubic root of 313616261 is about 679.4114435919.

The spelling of 313616261 in words is "three hundred thirteen million, six hundred sixteen thousand, two hundred sixty-one".