220311331023 has 16 divisors (see below), whose sum is σ = 336038155776. Its totient is φ = 125770069920.

The previous prime is 220311330973. The next prime is 220311331049. The reversal of 220311331023 is 320133113022.

It is not a de Polignac number, because 220311331023 - 2⁹ = 220311330511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220311331523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5066136 + ... + 5109437.

It is an arithmetic number, because the mean of its divisors is an integer number (21002384736).

Almost surely, 2^220311331023 is an apocalyptic number.

220311331023 is a deficient number, since it is larger than the sum of its proper divisors (115726824753).

220311331023 is a wasteful number, since it uses less digits than its factorization.

220311331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10176614.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 220311331023 its reverse (320133113022), we get a palindrome (540444444045).

The spelling of 220311331023 in words is "two hundred twenty billion, three hundred eleven million, three hundred thirty-one thousand, twenty-three".