220432331 has 6 divisors (see below), whose sum is σ = 256421340. Its totient is φ = 188941956.

The previous prime is 220432327. The next prime is 220432339. The reversal of 220432331 is 133234022.

It is not a de Polignac number, because 220432331 - 2² = 220432327 is a prime.

It is a super-3 number, since 3×220432331³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (220432339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2249261 + ... + 2249358.

It is an arithmetic number, because the mean of its divisors is an integer number (42736890).

Almost surely, 2^220432331 is an apocalyptic number.

220432331 is a deficient number, since it is larger than the sum of its proper divisors (35989009).

220432331 is an equidigital number, since it uses as much as digits as its factorization.

220432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4498633 (or 4498626 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 220432331 is about 14846.9636963253. The cubic root of 220432331 is about 604.0762543888.

Adding to 220432331 its reverse (133234022), we get a palindrome (353666353).

The spelling of 220432331 in words is "two hundred twenty million, four hundred thirty-two thousand, three hundred thirty-one".