1323450997 has 4 divisors (see below), whose sum is σ = 1443764736. Its totient is φ = 1203137260.

The previous prime is 1323450983. The next prime is 1323451001. The reversal of 1323450997 is 7990543231.

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: 7990543231 = 11 ⋅726413021.

It is a cyclic number.

It is not a de Polignac number, because 1323450997 - 2¹¹ = 1323448949 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 (1323450907) 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, 60156853 + ... + 60156874.

It is an arithmetic number, because the mean of its divisors is an integer number (360941184).

Almost surely, 2^1323450997 is an apocalyptic number.

It is an amenable number.

1323450997 is a deficient number, since it is larger than the sum of its proper divisors (120313739).

1323450997 is a wasteful number, since it uses less digits than its factorization.

1323450997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120313738.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 1323450997 is about 36379.2660316285. The cubic root of 1323450997 is about 1097.9164407775.

The spelling of 1323450997 in words is "one billion, three hundred twenty-three million, four hundred fifty thousand, nine hundred ninety-seven".