1320513203 has 16 divisors (see below), whose sum is σ = 1358985600. Its totient is φ = 1282744320.

The previous prime is 1320513149. The next prime is 1320513211. The reversal of 1320513203 is 3023150231.

It is a cyclic number.

It is not a de Polignac number, because 1320513203 - 2³⁰ = 246771379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320513263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2059763 + ... + 2060403.

It is an arithmetic number, because the mean of its divisors is an integer number (84936600).

Almost surely, 2^1320513203 is an apocalyptic number.

1320513203 is a deficient number, since it is larger than the sum of its proper divisors (38472397).

1320513203 is an equidigital number, since it uses as much as digits as its factorization.

1320513203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1320513203 is about 36338.8662866634. The cubic root of 1320513203 is about 1097.1034546514.

Adding to 1320513203 its reverse (3023150231), we get a palindrome (4343663434).

The spelling of 1320513203 in words is "one billion, three hundred twenty million, five hundred thirteen thousand, two hundred three".