220231441 has 2 divisors, whose sum is σ = 220231442. Its totient is φ = 220231440.

The previous prime is 220231393. The next prime is 220231457. The reversal of 220231441 is 144132022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194017041 + 26214400 = 13929^2 + 5120^2 .

It is a cyclic number.

It is not a de Polignac number, because 220231441 - 2⁷ = 220231313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220201441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110115720 + 110115721.

It is an arithmetic number, because the mean of its divisors is an integer number (110115721).

Almost surely, 2^220231441 is an apocalyptic number.

It is an amenable number.

220231441 is a deficient number, since it is larger than the sum of its proper divisors (1).

220231441 is an equidigital number, since it uses as much as digits as its factorization.

220231441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 220231441 is about 14840.1967978865. The cubic root of 220231441 is about 603.8926912341.

Adding to 220231441 its reverse (144132022), we get a palindrome (364363463).

The spelling of 220231441 in words is "two hundred twenty million, two hundred thirty-one thousand, four hundred forty-one".