220310231223 has 4 divisors (see below), whose sum is σ = 293746974968. Its totient is φ = 146873487480.

The previous prime is 220310231203. The next prime is 220310231233. The reversal of 220310231223 is 322132013022.

It is a happy number.

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

It is not a de Polignac number, because 220310231223 - 2⁵ = 220310231191 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 220310231223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220310231203) 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, 36718371868 + ... + 36718371873.

It is an arithmetic number, because the mean of its divisors is an integer number (73436743742).

Almost surely, 2^220310231223 is an apocalyptic number.

220310231223 is a deficient number, since it is larger than the sum of its proper divisors (73436743745).

220310231223 is an equidigital number, since it uses as much as digits as its factorization.

220310231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73436743744.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 220310231223 its reverse (322132013022), we get a palindrome (542442244245).

The spelling of 220310231223 in words is "two hundred twenty billion, three hundred ten million, two hundred thirty-one thousand, two hundred twenty-three".