313235281 has 2 divisors, whose sum is σ = 313235282. Its totient is φ = 313235280.

The previous prime is 313235269. The next prime is 313235287. The reversal of 313235281 is 182532313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201214225 + 112021056 = 14185^2 + 10584^2 .

It is a cyclic number.

It is not a de Polignac number, because 313235281 - 2²³ = 304846673 is a prime.

It is a super-2 number, since 2×313235281² = 196232682526297922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313235287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156617640 + 156617641.

It is an arithmetic number, because the mean of its divisors is an integer number (156617641).

Almost surely, 2^313235281 is an apocalyptic number.

It is an amenable number.

313235281 is a deficient number, since it is larger than the sum of its proper divisors (1).

313235281 is an equidigital number, since it uses as much as digits as its factorization.

313235281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 313235281 is about 17698.4541980366. The cubic root of 313235281 is about 679.1362165195.

Adding to 313235281 its reverse (182532313), we get a palindrome (495767594).

The spelling of 313235281 in words is "three hundred thirteen million, two hundred thirty-five thousand, two hundred eighty-one".