315265243 has 4 divisors (see below), whose sum is σ = 316059760. Its totient is φ = 314470728.

The previous prime is 315265231. The next prime is 315265259. The reversal of 315265243 is 342562513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342562513 = 89 ⋅3849017.

It is a cyclic number.

It is not a de Polignac number, because 315265243 - 2¹³ = 315257051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315265213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396663 + ... + 397456.

It is an arithmetic number, because the mean of its divisors is an integer number (79014940).

Almost surely, 2^315265243 is an apocalyptic number.

315265243 is a deficient number, since it is larger than the sum of its proper divisors (794517).

315265243 is an equidigital number, since it uses as much as digits as its factorization.

315265243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794516.

The product of its digits is 21600, while the sum is 31.

The square root of 315265243 is about 17755.7101519483. The cubic root of 315265243 is about 680.6001355623.

The spelling of 315265243 in words is "three hundred fifteen million, two hundred sixty-five thousand, two hundred forty-three".