318423823 has 4 divisors (see below), whose sum is σ = 318570568. Its totient is φ = 318277080.

The previous prime is 318423733. The next prime is 318423827. The reversal of 318423823 is 328324813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328324813 = 31 ⋅10591123.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318423823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318423827) 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, 70068 + ... + 74473.

It is an arithmetic number, because the mean of its divisors is an integer number (79642642).

Almost surely, 2^318423823 is an apocalyptic number.

318423823 is a deficient number, since it is larger than the sum of its proper divisors (146745).

318423823 is a wasteful number, since it uses less digits than its factorization.

318423823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146744.

The product of its digits is 27648, while the sum is 34.

The square root of 318423823 is about 17844.4339501145. The cubic root of 318423823 is about 682.8655194772.

The spelling of 318423823 in words is "three hundred eighteen million, four hundred twenty-three thousand, eight hundred twenty-three".