220040321031 has 24 divisors (see below), whose sum is σ = 321775534080. Its totient is φ = 144885673296.

The previous prime is 220040321027. The next prime is 220040321047. The reversal of 220040321031 is 130123040022.

220040321031 is a `hidden beast` number, since 2 + 20 + 0 + 403 + 210 + 31 = 666.

It is not a de Polignac number, because 220040321031 - 2² = 220040321027 is a prime.

It is a super-2 number, since 2×220040321031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220040320995 and 220040321013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220040321131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176751 + ... + 686528.

It is an arithmetic number, because the mean of its divisors is an integer number (13407313920).

Almost surely, 2^220040321031 is an apocalyptic number.

220040321031 is a deficient number, since it is larger than the sum of its proper divisors (101735213049).

220040321031 is a wasteful number, since it uses less digits than its factorization.

220040321031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863635 (or 863632 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 220040321031 its reverse (130123040022), we get a palindrome (350163361053).

The spelling of 220040321031 in words is "two hundred twenty billion, forty million, three hundred twenty-one thousand, thirty-one".