220031223231 has 8 divisors (see below), whose sum is σ = 295343924400. Its totient is φ = 145703002112.

The previous prime is 220031223133. The next prime is 220031223233. The reversal of 220031223231 is 132322130022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220031223231 - 2¹⁴ = 220031206847 is a prime.

It is a super-2 number, since 2×220031223231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220031223198 and 220031223207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220031223233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246119490 + ... + 246120383.

It is an arithmetic number, because the mean of its divisors is an integer number (36917990550).

Almost surely, 2^220031223231 is an apocalyptic number.

220031223231 is a deficient number, since it is larger than the sum of its proper divisors (75312701169).

220031223231 is a wasteful number, since it uses less digits than its factorization.

220031223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492240025.

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

Adding to 220031223231 its reverse (132322130022), we get a palindrome (352353353253).

The spelling of 220031223231 in words is "two hundred twenty billion, thirty-one million, two hundred twenty-three thousand, two hundred thirty-one".