313251613 has 6 divisors (see below), whose sum is σ = 330606654. Its totient is φ = 296764344.

The previous prime is 313251563. The next prime is 313251623. The reversal of 313251613 is 316152313.

It can be written as a sum of positive squares in only one way, i.e., 175377049 + 137874564 = 13243^2 + 11742^2 .

It is not a de Polignac number, because 313251613 - 2⁹ = 313251101 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 (313251623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 433506 + ... + 434227.

It is an arithmetic number, because the mean of its divisors is an integer number (55101109).

Almost surely, 2^313251613 is an apocalyptic number.

It is an amenable number.

313251613 is a deficient number, since it is larger than the sum of its proper divisors (17355041).

313251613 is an equidigital number, since it uses as much as digits as its factorization.

313251613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867771 (or 867752 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

The square root of 313251613 is about 17698.9155882500. The cubic root of 313251613 is about 679.1480196385.

It can be divided in two parts, 3132 and 51613, that added together give a palindrome (54745).

The spelling of 313251613 in words is "three hundred thirteen million, two hundred fifty-one thousand, six hundred thirteen".