1323131201 has 4 divisors (see below), whose sum is σ = 1512149952. Its totient is φ = 1134112452.

The previous prime is 1323131197. The next prime is 1323131207. The reversal of 1323131201 is 1021313231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1021313231 = 20899 ⋅48869.

It is a cyclic number.

It is not a de Polignac number, because 1323131201 - 2² = 1323131197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323131201.

It is not an unprimeable number, because it can be changed into a prime (1323131207) 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, 94509365 + ... + 94509378.

It is an arithmetic number, because the mean of its divisors is an integer number (378037488).

Almost surely, 2^1323131201 is an apocalyptic number.

It is an amenable number.

1323131201 is a deficient number, since it is larger than the sum of its proper divisors (189018751).

1323131201 is an equidigital number, since it uses as much as digits as its factorization.

1323131201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189018750.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1323131201 is about 36374.8704602504. The cubic root of 1323131201 is about 1097.8280008904.

Adding to 1323131201 its reverse (1021313231), we get a palindrome (2344444432).

The spelling of 1323131201 in words is "one billion, three hundred twenty-three million, one hundred thirty-one thousand, two hundred one".