1320323213 has 16 divisors (see below), whose sum is σ = 1487428800. Its totient is φ = 1161578880.

The previous prime is 1320323203. The next prime is 1320323219. The reversal of 1320323213 is 3123230231.

It is not a de Polignac number, because 1320323213 - 2¹⁰ = 1320322189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320323219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38753 + ... + 64361.

It is an arithmetic number, because the mean of its divisors is an integer number (92964300).

Almost surely, 2^1320323213 is an apocalyptic number.

It is an amenable number.

1320323213 is a deficient number, since it is larger than the sum of its proper divisors (167105587).

1320323213 is a wasteful number, since it uses less digits than its factorization.

1320323213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25772.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1320323213 is about 36336.2520494340. The cubic root of 1320323213 is about 1097.0508365526.

Adding to 1320323213 its reverse (3123230231), we get a palindrome (4443553444).

The spelling of 1320323213 in words is "one billion, three hundred twenty million, three hundred twenty-three thousand, two hundred thirteen".