1323020011 has 4 divisors (see below), whose sum is σ = 1335384792. Its totient is φ = 1310655232.

The previous prime is 1323019987. The next prime is 1323020047. The reversal of 1323020011 is 1100203231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1100203231 = 6269 ⋅175499.

It is a cyclic number.

It is not a de Polignac number, because 1323020011 - 2⁵ = 1323019979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323019973 and 1323020000.

It is not an unprimeable number, because it can be changed into a prime (1323020081) 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, 6182230 + ... + 6182443.

It is an arithmetic number, because the mean of its divisors is an integer number (333846198).

Almost surely, 2^1323020011 is an apocalyptic number.

1323020011 is a deficient number, since it is larger than the sum of its proper divisors (12364781).

1323020011 is a wasteful number, since it uses less digits than its factorization.

1323020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12364780.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1323020011 is about 36373.3420378167. The cubic root of 1323020011 is about 1097.7972478517.

Adding to 1323020011 its reverse (1100203231), we get a palindrome (2423223242).

The spelling of 1323020011 in words is "one billion, three hundred twenty-three million, twenty thousand, eleven".