1323520133 has 8 divisors (see below), whose sum is σ = 1426959576. Its totient is φ = 1220313600.

The previous prime is 1323520123. The next prime is 1323520151. The reversal of 1323520133 is 3310253231.

It can be written as a sum of positive squares in 4 ways, for example, as 105719524 + 1217800609 = 10282^2 + 34897^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1323520133 - 2⁸ = 1323519877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323520099 and 1323520108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323520103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46328 + ... + 69233.

It is an arithmetic number, because the mean of its divisors is an integer number (178369947).

Almost surely, 2^1323520133 is an apocalyptic number.

1323520133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1323520133 is a deficient number, since it is larger than the sum of its proper divisors (103439443).

1323520133 is a wasteful number, since it uses less digits than its factorization.

1323520133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116455.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 1323520133 is about 36380.2162308032. The cubic root of 1323520133 is about 1097.9355585309.

Adding to 1323520133 its reverse (3310253231), we get a palindrome (4633773364).

The spelling of 1323520133 in words is "one billion, three hundred twenty-three million, five hundred twenty thousand, one hundred thirty-three".