220031131131231 has 8 divisors (see below), whose sum is σ = 335285533152384. Its totient is φ = 125732074932120.

The previous prime is 220031131131193. The next prime is 220031131131283. The reversal of 220031131131231 is 132131131130022.

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

It is not a de Polignac number, because 220031131131231 - 2²² = 220031126936927 is a prime.

It is a super-2 number, since 2×220031131131231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220031131131431) 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, 5238836455485 + ... + 5238836455526.

It is an arithmetic number, because the mean of its divisors is an integer number (41910691644048).

Almost surely, 2^{220031131131231} is an apocalyptic number.

220031131131231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

220031131131231 is a deficient number, since it is larger than the sum of its proper divisors (115254402021153).

220031131131231 is a wasteful number, since it uses less digits than its factorization.

220031131131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10477672911021.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 220031131131231 its reverse (132131131130022), we get a palindrome (352162262261253).

The spelling of 220031131131231 in words is "two hundred twenty trillion, thirty-one billion, one hundred thirty-one million, one hundred thirty-one thousand, two hundred thirty-one".