18231314 has 16 divisors (see below), whose sum is σ = 28759320. Its totient is φ = 8655360.

The previous prime is 18231313. The next prime is 18231331. The reversal of 18231314 is 41313281.

It can be written as a sum of positive squares in 4 ways, for example, as 12145225 + 6086089 = 3485^2 + 2467^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18231314.

It is not an unprimeable number, because it can be changed into a prime (18231313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962 + ... + 6114.

Almost surely, 2^18231314 is an apocalyptic number.

18231314 is a deficient number, since it is larger than the sum of its proper divisors (10528006).

18231314 is a wasteful number, since it uses less digits than its factorization.

18231314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245.

The product of its digits is 576, while the sum is 23.

The square root of 18231314 is about 4269.8142816755. The cubic root of 18231314 is about 263.1919834619.

Adding to 18231314 its reverse (41313281), we get a palindrome (59544595).

The spelling of 18231314 in words is "eighteen million, two hundred thirty-one thousand, three hundred fourteen".