105218339 has 4 divisors (see below), whose sum is σ = 105316224. Its totient is φ = 105120456.

The previous prime is 105218317. The next prime is 105218387. The reversal of 105218339 is 933812501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105218339 is a prime.

It is a super-2 number, since 2×105218339² = 22141797723837842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105211339) 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, 47312 + ... + 49485.

It is an arithmetic number, because the mean of its divisors is an integer number (26329056).

Almost surely, 2^105218339 is an apocalyptic number.

105218339 is a deficient number, since it is larger than the sum of its proper divisors (97885).

105218339 is an equidigital number, since it uses as much as digits as its factorization.

105218339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97884.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 105218339 is about 10257.5990855560. The cubic root of 105218339 is about 472.0961737258.

It can be divided in two parts, 1052 and 18339, that added together give a palindrome (19391).

The spelling of 105218339 in words is "one hundred five million, two hundred eighteen thousand, three hundred thirty-nine".