313274581 has 2 divisors, whose sum is σ = 313274582. Its totient is φ = 313274580.

The previous prime is 313274569. The next prime is 313274639. The reversal of 313274581 is 185472313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307827025 + 5447556 = 17545^2 + 2334^2 .

It is a cyclic number.

It is not a de Polignac number, because 313274581 - 2¹³ = 313266389 is a prime.

It is a super-2 number, since 2×313274581² = 196281926201451122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313274551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156637290 + 156637291.

It is an arithmetic number, because the mean of its divisors is an integer number (156637291).

Almost surely, 2^313274581 is an apocalyptic number.

It is an amenable number.

313274581 is a deficient number, since it is larger than the sum of its proper divisors (1).

313274581 is an equidigital number, since it uses as much as digits as its factorization.

313274581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 313274581 is about 17699.5644296689. The cubic root of 313274581 is about 679.1646178935.

The spelling of 313274581 in words is "three hundred thirteen million, two hundred seventy-four thousand, five hundred eighty-one".