18311042 has 8 divisors (see below), whose sum is σ = 27853632. Its totient is φ = 9026500.

The previous prime is 18311039. The next prime is 18311047. The reversal of 18311042 is 24011381.

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

It is not an unprimeable number, because it can be changed into a prime (18311047) 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, 64334 + ... + 64617.

It is an arithmetic number, because the mean of its divisors is an integer number (3481704).

Almost surely, 2^18311042 is an apocalyptic number.

18311042 is a deficient number, since it is larger than the sum of its proper divisors (9542590).

18311042 is a wasteful number, since it uses less digits than its factorization.

18311042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129024.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 18311042 is about 4279.1403342260. The cubic root of 18311042 is about 263.5750835915.

The spelling of 18311042 in words is "eighteen million, three hundred eleven thousand, forty-two".