315247253 has 2 divisors, whose sum is σ = 315247254. Its totient is φ = 315247252.

The previous prime is 315247211. The next prime is 315247301. The reversal of 315247253 is 352742513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278789809 + 36457444 = 16697^2 + 6038^2 .

It is a cyclic number.

It is not a de Polignac number, because 315247253 - 2¹² = 315243157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315247553) 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, 157623626 + 157623627.

It is an arithmetic number, because the mean of its divisors is an integer number (157623627).

Almost surely, 2^315247253 is an apocalyptic number.

It is an amenable number.

315247253 is a deficient number, since it is larger than the sum of its proper divisors (1).

315247253 is an equidigital number, since it uses as much as digits as its factorization.

315247253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 32.

The square root of 315247253 is about 17755.2035471295. The cubic root of 315247253 is about 680.5871896068.

Adding to 315247253 its reverse (352742513), we get a palindrome (667989766).

It can be divided in two parts, 3152 and 47253, that added together give a palindrome (50405).

The spelling of 315247253 in words is "three hundred fifteen million, two hundred forty-seven thousand, two hundred fifty-three".