220031441 has 4 divisors (see below), whose sum is σ = 251464512. Its totient is φ = 188598372.

The previous prime is 220031431. The next prime is 220031443. The reversal of 220031441 is 144130022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220031441 - 2⁶ = 220031377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220031443) 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, 15716525 + ... + 15716538.

It is an arithmetic number, because the mean of its divisors is an integer number (62866128).

Almost surely, 2^220031441 is an apocalyptic number.

It is an amenable number.

220031441 is a deficient number, since it is larger than the sum of its proper divisors (31433071).

220031441 is an equidigital number, since it uses as much as digits as its factorization.

220031441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31433070.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 220031441 is about 14833.4568122201. The cubic root of 220031441 is about 603.7098303957.

Adding to 220031441 its reverse (144130022), we get a palindrome (364161463).

The spelling of 220031441 in words is "two hundred twenty million, thirty-one thousand, four hundred forty-one".