220543131 has 16 divisors (see below), whose sum is σ = 296275968. Its totient is φ = 145924800.

The previous prime is 220543093. The next prime is 220543139. The reversal of 220543131 is 131345022.

220543131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220543131 - 2¹⁵ = 220510363 is a prime.

It is a super-2 number, since 2×220543131² = 97278545262566322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220543098 and 220543107.

It is not an unprimeable number, because it can be changed into a prime (220543139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363030 + ... + 363636.

It is an arithmetic number, because the mean of its divisors is an integer number (18517248).

Almost surely, 2^220543131 is an apocalyptic number.

220543131 is a deficient number, since it is larger than the sum of its proper divisors (75732837).

220543131 is a wasteful number, since it uses less digits than its factorization.

220543131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 220543131 is about 14850.6946302185. The cubic root of 220543131 is about 604.1774501275.

Adding to 220543131 its reverse (131345022), we get a palindrome (351888153).

The spelling of 220543131 in words is "two hundred twenty million, five hundred forty-three thousand, one hundred thirty-one".