1220323203 has 24 divisors (see below), whose sum is σ = 2024143680. Its totient is φ = 700662960.

The previous prime is 1220323201. The next prime is 1220323229. The reversal of 1220323203 is 3023230221.

It is a happy number.

It is not a de Polignac number, because 1220323203 - 2¹ = 1220323201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220323201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322501 + ... + 326262.

It is an arithmetic number, because the mean of its divisors is an integer number (84339320).

Almost surely, 2^1220323203 is an apocalyptic number.

1220323203 is a deficient number, since it is larger than the sum of its proper divisors (803820477).

1220323203 is a wasteful number, since it uses less digits than its factorization.

1220323203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648799 (or 648796 counting only the distinct ones).

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

The square root of 1220323203 is about 34933.1247242499. The cubic root of 1220323203 is about 1068.6240802915.

Adding to 1220323203 its reverse (3023230221), we get a palindrome (4243553424).

It can be divided in two parts, 1220 and 323203, that added together give a palindrome (324423).

The spelling of 1220323203 in words is "one billion, two hundred twenty million, three hundred twenty-three thousand, two hundred three".