1323382491 has 24 divisors (see below), whose sum is σ = 2023472880. Its totient is φ = 832015296.

The previous prime is 1323382477. The next prime is 1323382513. The reversal of 1323382491 is 1942833231.

1323382491 is a `hidden beast` number, since 132 + 3 + 38 + 2 + 491 = 666.

It is not a de Polignac number, because 1323382491 - 2⁹ = 1323381979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323382421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47736 + ... + 70181.

It is an arithmetic number, because the mean of its divisors is an integer number (84311370).

Almost surely, 2^1323382491 is an apocalyptic number.

1323382491 is a deficient number, since it is larger than the sum of its proper divisors (700090389).

1323382491 is a wasteful number, since it uses less digits than its factorization.

1323382491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117995 (or 117992 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1323382491 is about 36378.3244666381. The cubic root of 1323382491 is about 1097.8974965774.

The spelling of 1323382491 in words is "one billion, three hundred twenty-three million, three hundred eighty-two thousand, four hundred ninety-one".