220400303 has 8 divisors (see below), whose sum is σ = 221840640. Its totient is φ = 218964760.

The previous prime is 220400293. The next prime is 220400309. The reversal of 220400303 is 303004022.

220400303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220400303 - 2⁶ = 220400239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220400309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139508 + ... + 141078.

It is an arithmetic number, because the mean of its divisors is an integer number (27730080).

Almost surely, 2^220400303 is an apocalyptic number.

220400303 is a deficient number, since it is larger than the sum of its proper divisors (1440337).

220400303 is a wasteful number, since it uses less digits than its factorization.

220400303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 220400303 is about 14845.8850527680. The cubic root of 220400303 is about 604.0469962920.

Adding to 220400303 its reverse (303004022), we get a palindrome (523404325).

The spelling of 220400303 in words is "two hundred twenty million, four hundred thousand, three hundred three".