2123323001 has 4 divisors (see below), whose sum is σ = 2248224372. Its totient is φ = 1998421632.

The previous prime is 2123322991. The next prime is 2123323019. The reversal of 2123323001 is 1003233212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1204020601 + 919302400 = 34699^2 + 30320^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123323001 - 2⁶ = 2123322937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 124901353 = 2123323001 / (2 + 1 + 2 + 3 + 3 + 2 + 3 + 0 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2123323031) 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, 62450660 + ... + 62450693.

It is an arithmetic number, because the mean of its divisors is an integer number (562056093).

Almost surely, 2^2123323001 is an apocalyptic number.

It is an amenable number.

2123323001 is a deficient number, since it is larger than the sum of its proper divisors (124901371).

2123323001 is a wasteful number, since it uses less digits than its factorization.

2123323001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124901370.

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

The square root of 2123323001 is about 46079.5290883056. The cubic root of 2123323001 is about 1285.3025073705.

Adding to 2123323001 its reverse (1003233212), we get a palindrome (3126556213).

The spelling of 2123323001 in words is "two billion, one hundred twenty-three million, three hundred twenty-three thousand, one".