23311121001 has 16 divisors (see below), whose sum is σ = 35678198784. Its totient is φ = 13261956624.

The previous prime is 23311120997. The next prime is 23311121039. The reversal of 23311121001 is 10012111332.

It is a happy number.

It is not a de Polignac number, because 23311121001 - 2² = 23311120997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23311121201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2440285 + ... + 2449818.

It is an arithmetic number, because the mean of its divisors is an integer number (2229887424).

Almost surely, 2^23311121001 is an apocalyptic number.

23311121001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23311121001 is a deficient number, since it is larger than the sum of its proper divisors (12367077783).

23311121001 is a wasteful number, since it uses less digits than its factorization.

23311121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890340.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 23311121001 its reverse (10012111332), we get a palindrome (33323232333).

The spelling of 23311121001 in words is "twenty-three billion, three hundred eleven million, one hundred twenty-one thousand, one".