23311000121 has 4 divisors (see below), whose sum is σ = 23362009332. Its totient is φ = 23259990912.

The previous prime is 23311000103. The next prime is 23311000187. The reversal of 23311000121 is 12100011332.

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 8319446521 + 14991553600 = 91211^2 + 122440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23311000121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23311000096 and 23311000105.

It is not an unprimeable number, because it can be changed into a prime (23311000621) 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, 25503920 + ... + 25504833.

It is an arithmetic number, because the mean of its divisors is an integer number (5840502333).

Almost surely, 2^23311000121 is an apocalyptic number.

It is an amenable number.

23311000121 is a deficient number, since it is larger than the sum of its proper divisors (51009211).

23311000121 is an equidigital number, since it uses as much as digits as its factorization.

23311000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51009210.

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

Adding to 23311000121 its reverse (12100011332), we get a palindrome (35411011453).

The spelling of 23311000121 in words is "twenty-three billion, three hundred eleven million, one hundred twenty-one", and thus it is an aban number.