315123323 has 4 divisors (see below), whose sum is σ = 315193560. Its totient is φ = 315053088.

The previous prime is 315123317. The next prime is 315123329. The reversal of 315123323 is 323321513.

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

It is an interprime number because it is at equal distance from previous prime (315123317) and next prime (315123329).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315123323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315123329) 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, 27893 + ... + 37526.

It is an arithmetic number, because the mean of its divisors is an integer number (78798390).

Almost surely, 2^315123323 is an apocalyptic number.

315123323 is a deficient number, since it is larger than the sum of its proper divisors (70237).

315123323 is an equidigital number, since it uses as much as digits as its factorization.

315123323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70236.

The product of its digits is 1620, while the sum is 23.

The square root of 315123323 is about 17751.7132412621. The cubic root of 315123323 is about 680.4979937723.

Adding to 315123323 its reverse (323321513), we get a palindrome (638444836).

The spelling of 315123323 in words is "three hundred fifteen million, one hundred twenty-three thousand, three hundred twenty-three".