315015223 has 4 divisors (see below), whose sum is σ = 315298360. Its totient is φ = 314732088.

The previous prime is 315015191. The next prime is 315015227. The reversal of 315015223 is 322510513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322510513 = 13 ⋅24808501.

It is a cyclic number.

It is not a de Polignac number, because 315015223 - 2⁵ = 315015191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315015194 and 315015203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315015227) 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 in 3 ways as a sum of consecutive naturals, for example, 139893 + ... + 142126.

It is an arithmetic number, because the mean of its divisors is an integer number (78824590).

Almost surely, 2^315015223 is an apocalyptic number.

315015223 is a deficient number, since it is larger than the sum of its proper divisors (283137).

315015223 is a wasteful number, since it uses less digits than its factorization.

315015223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283136.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 315015223 is about 17748.6682035583. The cubic root of 315015223 is about 680.4201721272.

Adding to 315015223 its reverse (322510513), we get a palindrome (637525736).

The spelling of 315015223 in words is "three hundred fifteen million, fifteen thousand, two hundred twenty-three".