18313343 has 4 divisors (see below), whose sum is σ = 18904128. Its totient is φ = 17722560.

The previous prime is 18313331. The next prime is 18313381. The reversal of 18313343 is 34331381.

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

It is a cyclic number.

It is not a de Polignac number, because 18313343 - 2⁴ = 18313327 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 (18313303) 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, 295346 + ... + 295407.

It is an arithmetic number, because the mean of its divisors is an integer number (4726032).

Almost surely, 2^18313343 is an apocalyptic number.

18313343 is a deficient number, since it is larger than the sum of its proper divisors (590785).

18313343 is an equidigital number, since it uses as much as digits as its factorization.

18313343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590784.

The product of its digits is 2592, while the sum is 26.

The square root of 18313343 is about 4279.4091881941. The cubic root of 18313343 is about 263.5861235761.

The spelling of 18313343 in words is "eighteen million, three hundred thirteen thousand, three hundred forty-three".