23130331121 has 4 divisors (see below), whose sum is σ = 24490938852. Its totient is φ = 21769723392.

The previous prime is 23130331117. The next prime is 23130331171. The reversal of 23130331121 is 12113303132.

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 16135350625 + 6994980496 = 127025^2 + 83636^2 .

It is a cyclic number.

It is not a de Polignac number, because 23130331121 - 2² = 23130331117 is a prime.

It is a super-2 number, since 2×23130331121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23130331093 and 23130331102.

It is not an unprimeable number, because it can be changed into a prime (23130331171) 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, 680303840 + ... + 680303873.

It is an arithmetic number, because the mean of its divisors is an integer number (6122734713).

Almost surely, 2^23130331121 is an apocalyptic number.

It is an amenable number.

23130331121 is a deficient number, since it is larger than the sum of its proper divisors (1360607731).

23130331121 is a wasteful number, since it uses less digits than its factorization.

23130331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360607730.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 23130331121 its reverse (12113303132), we get a palindrome (35243634253).

The spelling of 23130331121 in words is "twenty-three billion, one hundred thirty million, three hundred thirty-one thousand, one hundred twenty-one".