423931318 has 4 divisors (see below), whose sum is σ = 635896980. Its totient is φ = 211965658.

The previous prime is 423931303. The next prime is 423931351. The reversal of 423931318 is 813139324.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105982828 + ... + 105982831.

It is an arithmetic number, because the mean of its divisors is an integer number (158974245).

Almost surely, 2^423931318 is an apocalyptic number.

423931318 is a deficient number, since it is larger than the sum of its proper divisors (211965662).

423931318 is a wasteful number, since it uses less digits than its factorization.

423931318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211965661.

The product of its digits is 15552, while the sum is 34.

The square root of 423931318 is about 20589.5924680407. The cubic root of 423931318 is about 751.2165843113.

The spelling of 423931318 in words is "four hundred twenty-three million, nine hundred thirty-one thousand, three hundred eighteen".