318315623 has 4 divisors (see below), whose sum is σ = 318516048. Its totient is φ = 318115200.

The previous prime is 318315619. The next prime is 318315659. The reversal of 318315623 is 326513813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326513813 = 29 ⋅11259097.

It is a cyclic number.

It is not a de Polignac number, because 318315623 - 2² = 318315619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 318315623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318315523) 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, 97811 + ... + 101012.

It is an arithmetic number, because the mean of its divisors is an integer number (79629012).

Almost surely, 2^318315623 is an apocalyptic number.

318315623 is a deficient number, since it is larger than the sum of its proper divisors (200425).

318315623 is a wasteful number, since it uses less digits than its factorization.

318315623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200424.

The product of its digits is 12960, while the sum is 32.

The square root of 318315623 is about 17841.4019348256. The cubic root of 318315623 is about 682.7881651105.

The spelling of 318315623 in words is "three hundred eighteen million, three hundred fifteen thousand, six hundred twenty-three".