1323220203 has 6 divisors (see below), whose sum is σ = 1911318084. Its totient is φ = 882146796.

The previous prime is 1323220181. The next prime is 1323220237. The reversal of 1323220203 is 3020223231.

It is a happy number.

It is not a de Polignac number, because 1323220203 - 2²² = 1319025899 is a prime.

It is a super-2 number, since 2×1323220203² = 3501823411254722418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1323220253) 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, 73512225 + ... + 73512242.

It is an arithmetic number, because the mean of its divisors is an integer number (318553014).

Almost surely, 2^1323220203 is an apocalyptic number.

1323220203 is a deficient number, since it is larger than the sum of its proper divisors (588097881).

1323220203 is a wasteful number, since it uses less digits than its factorization.

1323220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147024473 (or 147024470 counting only the distinct ones).

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

The square root of 1323220203 is about 36376.0938392236. The cubic root of 1323220203 is about 1097.8526159089.

Adding to 1323220203 its reverse (3020223231), we get a palindrome (4343443434).

The spelling of 1323220203 in words is "one billion, three hundred twenty-three million, two hundred twenty thousand, two hundred three".