220432361 has 4 divisors (see below), whose sum is σ = 220470912. Its totient is φ = 220393812.

The previous prime is 220432349. The next prime is 220432363. The reversal of 220432361 is 163234022.

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 a de Polignac number, because none of the positive numbers 2^k-220432361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220432363) 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, 8801 + ... + 22766.

It is an arithmetic number, because the mean of its divisors is an integer number (55117728).

Almost surely, 2^220432361 is an apocalyptic number.

It is an amenable number.

220432361 is a deficient number, since it is larger than the sum of its proper divisors (38551).

220432361 is an equidigital number, since it uses as much as digits as its factorization.

220432361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38550.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 220432361 is about 14846.9647066328. The cubic root of 220432361 is about 604.0762817929.

Adding to 220432361 its reverse (163234022), we get a palindrome (383666383).

The spelling of 220432361 in words is "two hundred twenty million, four hundred thirty-two thousand, three hundred sixty-one".