220302131 has 16 divisors (see below), whose sum is σ = 265459200. Its totient is φ = 178599168.

The previous prime is 220302127. The next prime is 220302139. The reversal of 220302131 is 131203022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220302131 - 2² = 220302127 is a prime.

It is a super-2 number, since 2×220302131² = 97066057846282322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220302139) 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 15 ways as a sum of consecutive naturals, for example, 122666 + ... + 124448.

It is an arithmetic number, because the mean of its divisors is an integer number (16591200).

Almost surely, 2^220302131 is an apocalyptic number.

220302131 is a deficient number, since it is larger than the sum of its proper divisors (45157069).

220302131 is a wasteful number, since it uses less digits than its factorization.

220302131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 220302131 is about 14842.5783137567. The cubic root of 220302131 is about 603.9572969166.

Adding to 220302131 its reverse (131203022), we get a palindrome (351505153).

The spelling of 220302131 in words is "two hundred twenty million, three hundred two thousand, one hundred thirty-one".