220131004231 has 4 divisors (see below), whose sum is σ = 220214994264. Its totient is φ = 220047014200.

The previous prime is 220131004201. The next prime is 220131004241. The reversal of 220131004231 is 132400131022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 220131004231 - 2¹⁷ = 220130873159 is a prime.

It is a super-2 number, since 2×220131004231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220131004199 and 220131004208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220131004201) 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, 41991085 + ... + 41996326.

It is an arithmetic number, because the mean of its divisors is an integer number (55053748566).

Almost surely, 2^220131004231 is an apocalyptic number.

220131004231 is a deficient number, since it is larger than the sum of its proper divisors (83990033).

220131004231 is an equidigital number, since it uses as much as digits as its factorization.

220131004231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83990032.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 220131004231 its reverse (132400131022), we get a palindrome (352531135253).

The spelling of 220131004231 in words is "two hundred twenty billion, one hundred thirty-one million, four thousand, two hundred thirty-one".