23151231121 has 8 divisors (see below), whose sum is σ = 23499820800. Its totient is φ = 22802731248.

The previous prime is 23151231097. The next prime is 23151231127. The reversal of 23151231121 is 12113215132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23151231121 - 2³¹ = 21003747473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23151231092 and 23151231101.

It is not an unprimeable number, because it can be changed into a prime (23151231127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644955 + ... + 679903.

It is an arithmetic number, because the mean of its divisors is an integer number (2937477600).

Almost surely, 2^23151231121 is an apocalyptic number.

It is an amenable number.

23151231121 is a deficient number, since it is larger than the sum of its proper divisors (348589679).

23151231121 is an equidigital number, since it uses as much as digits as its factorization.

23151231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44903.

The product of its digits is 360, while the sum is 22.

Adding to 23151231121 its reverse (12113215132), we get a palindrome (35264446253).

The spelling of 23151231121 in words is "twenty-three billion, one hundred fifty-one million, two hundred thirty-one thousand, one hundred twenty-one".