253112317 has 4 divisors (see below), whose sum is σ = 253237660. Its totient is φ = 252986976.

The previous prime is 253112297. The next prime is 253112329. The reversal of 253112317 is 713211352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80084601 + 173027716 = 8949^2 + 13154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253112317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253112291 and 253112300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253112347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59592 + ... + 63697.

It is an arithmetic number, because the mean of its divisors is an integer number (63309415).

Almost surely, 2^253112317 is an apocalyptic number.

It is an amenable number.

253112317 is a deficient number, since it is larger than the sum of its proper divisors (125343).

253112317 is a wasteful number, since it uses less digits than its factorization.

253112317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125342.

The product of its digits is 1260, while the sum is 25.

The square root of 253112317 is about 15909.5039834685. The cubic root of 253112317 is about 632.5639336082.

Adding to 253112317 its reverse (713211352), we get a palindrome (966323669).

The spelling of 253112317 in words is "two hundred fifty-three million, one hundred twelve thousand, three hundred seventeen".