220321023 has 32 divisors (see below), whose sum is σ = 323108352. Its totient is φ = 132720000.

The previous prime is 220321021. The next prime is 220321027. The reversal of 220321023 is 320123022.

It is not a de Polignac number, because 220321023 - 2¹ = 220321021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220320993 and 220321011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220321021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 694861 + ... + 695177.

It is an arithmetic number, because the mean of its divisors is an integer number (10097136).

Almost surely, 2^220321023 is an apocalyptic number.

220321023 is a deficient number, since it is larger than the sum of its proper divisors (102787329).

220321023 is a wasteful number, since it uses less digits than its factorization.

220321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 220321023 is about 14843.2147124536. The cubic root of 220321023 is about 603.9745605340.

Adding to 220321023 its reverse (320123022), we get a palindrome (540444045).

The spelling of 220321023 in words is "two hundred twenty million, three hundred twenty-one thousand, twenty-three".