220013131 has 4 divisors (see below), whose sum is σ = 236937232. Its totient is φ = 203089032.

The previous prime is 220013119. The next prime is 220013159. The reversal of 220013131 is 131310022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131310022 = 2 ⋅65655011.

It is a cyclic number.

It is not a de Polignac number, because 220013131 - 2¹¹ = 220011083 is a prime.

It is a super-2 number, since 2×220013131² = 96811555624846322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 16924087 = 220013131 / (2 + 2 + 0 + 0 + 1 + 3 + 1 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220013531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8462031 + ... + 8462056.

It is an arithmetic number, because the mean of its divisors is an integer number (59234308).

Almost surely, 2^220013131 is an apocalyptic number.

220013131 is a deficient number, since it is larger than the sum of its proper divisors (16924101).

220013131 is a wasteful number, since it uses less digits than its factorization.

220013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16924100.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 220013131 is about 14832.8396135062. The cubic root of 220013131 is about 603.6930839502.

Adding to 220013131 its reverse (131310022), we get a palindrome (351323153).

The spelling of 220013131 in words is "two hundred twenty million, thirteen thousand, one hundred thirty-one".