220431033 has 6 divisors (see below), whose sum is σ = 318400394. Its totient is φ = 146954016.

The previous prime is 220431023. The next prime is 220431037. The reversal of 220431033 is 330134022.

It can be written as a sum of positive squares in only one way, i.e., 177502329 + 42928704 = 13323^2 + 6552^2 .

It is not a de Polignac number, because 220431033 - 2⁹ = 220430521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220430997 and 220431015.

It is not an unprimeable number, because it can be changed into a prime (220431037) 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 5 ways as a sum of consecutive naturals, for example, 12246160 + ... + 12246177.

Almost surely, 2^220431033 is an apocalyptic number.

It is an amenable number.

220431033 is a deficient number, since it is larger than the sum of its proper divisors (97969361).

220431033 is a wasteful number, since it uses less digits than its factorization.

220431033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24492343 (or 24492340 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 220431033 is about 14846.9199836195. The cubic root of 220431033 is about 604.0750686998.

Adding to 220431033 its reverse (330134022), we get a palindrome (550565055).

The spelling of 220431033 in words is "two hundred twenty million, four hundred thirty-one thousand, thirty-three".