220332423 has 4 divisors (see below), whose sum is σ = 293776568. Its totient is φ = 146888280.

The previous prime is 220332419. The next prime is 220332439. The reversal of 220332423 is 324233022.

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

It is not a de Polignac number, because 220332423 - 2² = 220332419 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 220332423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220332403) 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, 36722068 + ... + 36722073.

It is an arithmetic number, because the mean of its divisors is an integer number (73444142).

Almost surely, 2^220332423 is an apocalyptic number.

220332423 is a deficient number, since it is larger than the sum of its proper divisors (73444145).

220332423 is an equidigital number, since it uses as much as digits as its factorization.

220332423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73444144.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 220332423 is about 14843.5987213344. The cubic root of 220332423 is about 603.9849774417.

Adding to 220332423 its reverse (324233022), we get a palindrome (544565445).

The spelling of 220332423 in words is "two hundred twenty million, three hundred thirty-two thousand, four hundred twenty-three".