2001123323 has 2 divisors, whose sum is σ = 2001123324. Its totient is φ = 2001123322.

The previous prime is 2001123307. The next prime is 2001123331. The reversal of 2001123323 is 3233211002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001123323 - 2⁴ = 2001123307 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001123343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000561661 + 1000561662.

It is an arithmetic number, because the mean of its divisors is an integer number (1000561662).

Almost surely, 2^2001123323 is an apocalyptic number.

2001123323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001123323 is an equidigital number, since it uses as much as digits as its factorization.

2001123323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2001123323 is about 44733.9169199389. The cubic root of 2001123323 is about 1260.1568887954.

Adding to 2001123323 its reverse (3233211002), we get a palindrome (5234334325).

It can be divided in two parts, 20011 and 23323, that added together give a palindrome (43334).

The spelling of 2001123323 in words is "two billion, one million, one hundred twenty-three thousand, three hundred twenty-three".