1323520051 has 8 divisors (see below), whose sum is σ = 1512816480. Its totient is φ = 1134279168.

The previous prime is 1323520019. The next prime is 1323520087. The reversal of 1323520051 is 1500253231.

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 1323520051 - 2⁵ = 1323520019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323520001) 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, 75885 + ... + 91681.

It is an arithmetic number, because the mean of its divisors is an integer number (189102060).

Almost surely, 2^1323520051 is an apocalyptic number.

1323520051 is a deficient number, since it is larger than the sum of its proper divisors (189296429).

1323520051 is a wasteful number, since it uses less digits than its factorization.

1323520051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27773.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1323520051 is about 36380.2151038171. The cubic root of 1323520051 is about 1097.9355358563.

Adding to 1323520051 its reverse (1500253231), we get a palindrome (2823773282).

The spelling of 1323520051 in words is "one billion, three hundred twenty-three million, five hundred twenty thousand, fifty-one".