1323376081 has 4 divisors (see below), whose sum is σ = 1366065664. Its totient is φ = 1280686500.

The previous prime is 1323376073. The next prime is 1323376181. The reversal of 1323376081 is 1806733231.

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: 1806733231 = 34877 ⋅51803.

It is a cyclic number.

It is not a de Polignac number, because 1323376081 - 2³ = 1323376073 is a prime.

It is a super-2 number, since 2×1323376081² = 3502648503525837122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323376051) 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, 21344745 + ... + 21344806.

It is an arithmetic number, because the mean of its divisors is an integer number (341516416).

Almost surely, 2^1323376081 is an apocalyptic number.

It is an amenable number.

1323376081 is a deficient number, since it is larger than the sum of its proper divisors (42689583).

1323376081 is an equidigital number, since it uses as much as digits as its factorization.

1323376081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42689582.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 1323376081 is about 36378.2363646178. The cubic root of 1323376081 is about 1097.8957239646.

The spelling of 1323376081 in words is "one billion, three hundred twenty-three million, three hundred seventy-six thousand, eighty-one".