220231312131 has 8 divisors (see below), whose sum is σ = 295754280640. Its totient is φ = 145764609192.

The previous prime is 220231312123. The next prime is 220231312163. The reversal of 220231312131 is 131213132022.

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

It is not a de Polignac number, because 220231312131 - 2³ = 220231312123 is a prime.

It is a super-2 number, since 2×220231312131² (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 = 220231312098 and 220231312107.

It is not an unprimeable number, because it can be changed into a prime (220231312111) 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, 264065905 + ... + 264066738.

It is an arithmetic number, because the mean of its divisors is an integer number (36969285080).

Almost surely, 2^220231312131 is an apocalyptic number.

220231312131 is a deficient number, since it is larger than the sum of its proper divisors (75522968509).

220231312131 is a wasteful number, since it uses less digits than its factorization.

220231312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528132785.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 220231312131 its reverse (131213132022), we get a palindrome (351444444153).

The spelling of 220231312131 in words is "two hundred twenty billion, two hundred thirty-one million, three hundred twelve thousand, one hundred thirty-one".