220213231131 has 4 divisors (see below), whose sum is σ = 293617641512. Its totient is φ = 146808820752.

The previous prime is 220213231123. The next prime is 220213231163. The reversal of 220213231131 is 131132312022.

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

It is not a de Polignac number, because 220213231131 - 2³ = 220213231123 is a prime.

It is a super-2 number, since 2×220213231131² (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 = 220213231098 and 220213231107.

It is not an unprimeable number, because it can be changed into a prime (220213231171) 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, 36702205186 + ... + 36702205191.

It is an arithmetic number, because the mean of its divisors is an integer number (73404410378).

Almost surely, 2^220213231131 is an apocalyptic number.

220213231131 is a deficient number, since it is larger than the sum of its proper divisors (73404410381).

220213231131 is an equidigital number, since it uses as much as digits as its factorization.

220213231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73404410380.

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

Adding to 220213231131 its reverse (131132312022), we get a palindrome (351345543153).

The spelling of 220213231131 in words is "two hundred twenty billion, two hundred thirteen million, two hundred thirty-one thousand, one hundred thirty-one".