23123002001 has 4 divisors (see below), whose sum is σ = 25225093104. Its totient is φ = 21020910900.

The previous prime is 23123001971. The next prime is 23123002003. The reversal of 23123002001 is 10020032132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-23123002001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23123002003) 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, 1051045535 + ... + 1051045556.

It is an arithmetic number, because the mean of its divisors is an integer number (6306273276).

Almost surely, 2^23123002001 is an apocalyptic number.

It is an amenable number.

23123002001 is a deficient number, since it is larger than the sum of its proper divisors (2102091103).

23123002001 is a wasteful number, since it uses less digits than its factorization.

23123002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102091102.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 23123002001 its reverse (10020032132), we get a palindrome (33143034133).

The spelling of 23123002001 in words is "twenty-three billion, one hundred twenty-three million, two thousand, one".