313373813 has 2 divisors, whose sum is σ = 313373814. Its totient is φ = 313373812.

The previous prime is 313373779. The next prime is 313373843. The reversal of 313373813 is 318373313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206726884 + 106646929 = 14378^2 + 10327^2 .

It is an emirp because it is prime and its reverse (318373313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313373813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313373813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313373843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156686906 + 156686907.

It is an arithmetic number, because the mean of its divisors is an integer number (156686907).

Almost surely, 2^313373813 is an apocalyptic number.

It is an amenable number.

313373813 is a deficient number, since it is larger than the sum of its proper divisors (1).

313373813 is an equidigital number, since it uses as much as digits as its factorization.

313373813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 313373813 is about 17702.3674405431. The cubic root of 313373813 is about 679.2363204326.

The spelling of 313373813 in words is "three hundred thirteen million, three hundred seventy-three thousand, eight hundred thirteen".