315023145 has 16 divisors (see below), whose sum is σ = 505075392. Its totient is φ = 167666240.

The previous prime is 315023099. The next prime is 315023161. The reversal of 315023145 is 541320513.

It is not a de Polignac number, because 315023145 - 2¹¹ = 315021097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14022 + ... + 28751.

It is an arithmetic number, because the mean of its divisors is an integer number (31567212).

Almost surely, 2^315023145 is an apocalyptic number.

It is an amenable number.

315023145 is a deficient number, since it is larger than the sum of its proper divisors (190052247).

315023145 is a wasteful number, since it uses less digits than its factorization.

315023145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43272.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 315023145 is about 17748.8913738295. The cubic root of 315023145 is about 680.4258758128.

Adding to 315023145 its reverse (541320513), we get a palindrome (856343658).

The spelling of 315023145 in words is "three hundred fifteen million, twenty-three thousand, one hundred forty-five".