1323112001 has 4 divisors (see below), whose sum is σ = 1323740292. Its totient is φ = 1322483712.

The previous prime is 1323111953. The next prime is 1323112009. The reversal of 1323112001 is 1002113231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1002113231 = 7 ⋅143159033.

It can be written as a sum of positive squares in 2 ways, for example, as 39753025 + 1283358976 = 6305^2 + 35824^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323112001 - 2¹⁰ = 1323110977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1323112009) 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, 310976 + ... + 315201.

It is an arithmetic number, because the mean of its divisors is an integer number (330935073).

Almost surely, 2^1323112001 is an apocalyptic number.

It is an amenable number.

1323112001 is a deficient number, since it is larger than the sum of its proper divisors (628291).

1323112001 is an equidigital number, since it uses as much as digits as its factorization.

1323112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628290.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1323112001 is about 36374.6065408274. The cubic root of 1323112001 is about 1097.8226906587.

Adding to 1323112001 its reverse (1002113231), we get a palindrome (2325225232).

The spelling of 1323112001 in words is "one billion, three hundred twenty-three million, one hundred twelve thousand, one".