220339823 has 4 divisors (see below), whose sum is σ = 240370728. Its totient is φ = 200308920.

The previous prime is 220339817. The next prime is 220339841. The reversal of 220339823 is 328933022.

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 220339823 - 2¹⁰ = 220338799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220339823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220339813) 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, 10015436 + ... + 10015457.

It is an arithmetic number, because the mean of its divisors is an integer number (60092682).

Almost surely, 2^220339823 is an apocalyptic number.

220339823 is a deficient number, since it is larger than the sum of its proper divisors (20030905).

220339823 is a wasteful number, since it uses less digits than its factorization.

220339823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20030904.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 220339823 is about 14843.8479849398. The cubic root of 220339823 is about 603.9917391017.

It can be divided in two parts, 220 and 339823, that added together give a palindrome (340043).

The spelling of 220339823 in words is "two hundred twenty million, three hundred thirty-nine thousand, eight hundred twenty-three".