18042313 has 8 divisors (see below), whose sum is σ = 18776448. Its totient is φ = 17322864.

The previous prime is 18042293. The next prime is 18042319. The reversal of 18042313 is 31324081.

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

It is a cyclic number.

It is not a de Polignac number, because 18042313 - 2⁹ = 18041801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18042319) 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, 1131 + ... + 6112.

It is an arithmetic number, because the mean of its divisors is an integer number (2347056).

Almost surely, 2^18042313 is an apocalyptic number.

It is an amenable number.

18042313 is a deficient number, since it is larger than the sum of its proper divisors (734135).

18042313 is an equidigital number, since it uses as much as digits as its factorization.

18042313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7343.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 18042313 is about 4247.6243948824. The cubic root of 18042313 is about 262.2793332214.

Adding to 18042313 its reverse (31324081), we get a palindrome (49366394).

The spelling of 18042313 in words is "eighteen million, forty-two thousand, three hundred thirteen".