1323440011 has 4 divisors (see below), whose sum is σ = 1324532272. Its totient is φ = 1322347752.

The previous prime is 1323439993. The next prime is 1323440017. The reversal of 1323440011 is 1100443231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1323440011 - 2⁷ = 1323439883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323440017) 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, 544311 + ... + 546736.

It is an arithmetic number, because the mean of its divisors is an integer number (331133068).

Almost surely, 2^1323440011 is an apocalyptic number.

1323440011 is a deficient number, since it is larger than the sum of its proper divisors (1092261).

1323440011 is a wasteful number, since it uses less digits than its factorization.

1323440011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092260.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1323440011 is about 36379.1150387142. The cubic root of 1323440011 is about 1097.9134028251.

Adding to 1323440011 its reverse (1100443231), we get a palindrome (2423883242).

The spelling of 1323440011 in words is "one billion, three hundred twenty-three million, four hundred forty thousand, eleven".