1323133213 has 6 divisors (see below), whose sum is σ = 1383162494. Its totient is φ = 1265605176.

The previous prime is 1323133211. The next prime is 1323133223. The reversal of 1323133213 is 3123313231.

It can be written as a sum of positive squares in only one way, i.e., 1297296324 + 25836889 = 36018^2 + 5083^2 .

It is not a de Polignac number, because 1323133213 - 2¹ = 1323133211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323133211) 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, 1250070 + ... + 1251127.

Almost surely, 2^1323133213 is an apocalyptic number.

It is an amenable number.

1323133213 is a deficient number, since it is larger than the sum of its proper divisors (60029281).

1323133213 is an equidigital number, since it uses as much as digits as its factorization.

1323133213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501243 (or 2501220 counting only the distinct ones).

The product of its digits is 972, while the sum is 22.

The square root of 1323133213 is about 36374.8981166958. The cubic root of 1323133213 is about 1097.8285573554.

Adding to 1323133213 its reverse (3123313231), we get a palindrome (4446446444).

The spelling of 1323133213 in words is "one billion, three hundred twenty-three million, one hundred thirty-three thousand, two hundred thirteen".