315404123 has 4 divisors (see below), whose sum is σ = 332004360. Its totient is φ = 298803888.

The previous prime is 315404101. The next prime is 315404143. The reversal of 315404123 is 321404513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321404513 = 19 ⋅16916027.

It is a cyclic number.

It is not a de Polignac number, because 315404123 - 2⁸ = 315403867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315404143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8300090 + ... + 8300127.

It is an arithmetic number, because the mean of its divisors is an integer number (83001090).

Almost surely, 2^315404123 is an apocalyptic number.

315404123 is a deficient number, since it is larger than the sum of its proper divisors (16600237).

315404123 is a wasteful number, since it uses less digits than its factorization.

315404123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16600236.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 315404123 is about 17759.6205759020. The cubic root of 315404123 is about 680.7000597508.

Adding to 315404123 its reverse (321404513), we get a palindrome (636808636).

The spelling of 315404123 in words is "three hundred fifteen million, four hundred four thousand, one hundred twenty-three".