220321131 has 8 divisors (see below), whose sum is σ = 309222720. Its totient is φ = 139150152.

The previous prime is 220321111. The next prime is 220321147. The reversal of 220321131 is 131123022.

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

It is not a de Polignac number, because 220321131 - 2⁵ = 220321099 is a prime.

It is a super-2 number, since 2×220321131² = 97082801530238322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220321131.

It is not an unprimeable number, because it can be changed into a prime (220321111) 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, 1932585 + ... + 1932698.

It is an arithmetic number, because the mean of its divisors is an integer number (38652840).

Almost surely, 2^220321131 is an apocalyptic number.

220321131 is a deficient number, since it is larger than the sum of its proper divisors (88901589).

220321131 is a wasteful number, since it uses less digits than its factorization.

220321131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865305.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 220321131 is about 14843.2183504791. The cubic root of 220321131 is about 603.9746592222.

Adding to 220321131 its reverse (131123022), we get a palindrome (351444153).

The spelling of 220321131 in words is "two hundred twenty million, three hundred twenty-one thousand, one hundred thirty-one".