315123045 has 8 divisors (see below), whose sum is σ = 504196896. Its totient is φ = 168065616.

The previous prime is 315123013. The next prime is 315123073. The reversal of 315123045 is 540321513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 315123045 - 2⁵ = 315123013 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10504087 + ... + 10504116.

It is an arithmetic number, because the mean of its divisors is an integer number (63024612).

Almost surely, 2^315123045 is an apocalyptic number.

It is an amenable number.

315123045 is a deficient number, since it is larger than the sum of its proper divisors (189073851).

315123045 is a wasteful number, since it uses less digits than its factorization.

315123045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21008211.

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

The square root of 315123045 is about 17751.7054110302. The cubic root of 315123045 is about 680.4977936618.

Adding to 315123045 its reverse (540321513), we get a palindrome (855444558).

The spelling of 315123045 in words is "three hundred fifteen million, one hundred twenty-three thousand, forty-five".