313025281 has 2 divisors, whose sum is σ = 313025282. Its totient is φ = 313025280.

The previous prime is 313025269. The next prime is 313025303. The reversal of 313025281 is 182520313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156650256 + 156375025 = 12516^2 + 12505^2 .

It is a cyclic number.

It is not a de Polignac number, because 313025281 - 2⁹ = 313024769 is a prime.

It is a super-2 number, since 2×313025281² = 195969653090257922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313023281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156512640 + 156512641.

It is an arithmetic number, because the mean of its divisors is an integer number (156512641).

Almost surely, 2^313025281 is an apocalyptic number.

It is an amenable number.

313025281 is a deficient number, since it is larger than the sum of its proper divisors (1).

313025281 is an equidigital number, since it uses as much as digits as its factorization.

313025281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 313025281 is about 17692.5204818307. The cubic root of 313025281 is about 678.9844131759.

Adding to 313025281 its reverse (182520313), we get a palindrome (495545594).

The spelling of 313025281 in words is "three hundred thirteen million, twenty-five thousand, two hundred eighty-one".