220323131 has 4 divisors (see below), whose sum is σ = 251797872. Its totient is φ = 188848392.

The previous prime is 220323127. The next prime is 220323133. The reversal of 220323131 is 131323022.

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

It is a cyclic number.

It is not a de Polignac number, because 220323131 - 2² = 220323127 is a prime.

It is a super-2 number, since 2×220323131² = 97084564107286322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220323133) 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, 15737360 + ... + 15737373.

It is an arithmetic number, because the mean of its divisors is an integer number (62949468).

Almost surely, 2^220323131 is an apocalyptic number.

220323131 is a deficient number, since it is larger than the sum of its proper divisors (31474741).

220323131 is an equidigital number, since it uses as much as digits as its factorization.

220323131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31474740.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 220323131 is about 14843.2857211603. The cubic root of 220323131 is about 603.9764867753.

Adding to 220323131 its reverse (131323022), we get a palindrome (351646153).

The spelling of 220323131 in words is "two hundred twenty million, three hundred twenty-three thousand, one hundred thirty-one".