220372231 has 4 divisors (see below), whose sum is σ = 220456000. Its totient is φ = 220288464.

The previous prime is 220372169. The next prime is 220372249. The reversal of 220372231 is 132273022.

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 220372231 - 2¹⁵ = 220339463 is a prime.

It is a super-2 number, since 2×220372231² = 97127840391834722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220375231) 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, 37806 + ... + 43243.

It is an arithmetic number, because the mean of its divisors is an integer number (55114000).

Almost surely, 2^220372231 is an apocalyptic number.

220372231 is a deficient number, since it is larger than the sum of its proper divisors (83769).

220372231 is an equidigital number, since it uses as much as digits as its factorization.

220372231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83768.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 220372231 is about 14844.9395754917. The cubic root of 220372231 is about 604.0213497344.

The spelling of 220372231 in words is "two hundred twenty million, three hundred seventy-two thousand, two hundred thirty-one".