220509023 has 12 divisors (see below), whose sum is σ = 267708912. Its totient is φ = 177888000.

The previous prime is 220509017. The next prime is 220509043. The reversal of 220509023 is 320905022.

It is not a de Polignac number, because 220509023 - 2⁸ = 220508767 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 220509023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220509043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52478 + ... + 56523.

It is an arithmetic number, because the mean of its divisors is an integer number (22309076).

Almost surely, 2^220509023 is an apocalyptic number.

220509023 is a deficient number, since it is larger than the sum of its proper divisors (47199889).

220509023 is a wasteful number, since it uses less digits than its factorization.

220509023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109042 (or 109025 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 220509023 is about 14849.5462220231. The cubic root of 220509023 is about 604.1463022566.

The spelling of 220509023 in words is "two hundred twenty million, five hundred nine thousand, twenty-three".