1320203203 has 4 divisors (see below), whose sum is σ = 1440221688. Its totient is φ = 1200184720.

The previous prime is 1320203191. The next prime is 1320203233. The reversal of 1320203203 is 3023020231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320203203 is a prime.

It is a super-2 number, since 2×1320203203² = 3485872994422918418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320203233) 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, 60009226 + ... + 60009247.

It is an arithmetic number, because the mean of its divisors is an integer number (360055422).

Almost surely, 2^1320203203 is an apocalyptic number.

1320203203 is a deficient number, since it is larger than the sum of its proper divisors (120018485).

1320203203 is a wasteful number, since it uses less digits than its factorization.

1320203203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120018484.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 1320203203 is about 36334.6006308037. The cubic root of 1320203203 is about 1097.0175969491.

Adding to 1320203203 its reverse (3023020231), we get a palindrome (4343223434).

The spelling of 1320203203 in words is "one billion, three hundred twenty million, two hundred three thousand, two hundred three".