23861121 has 4 divisors (see below), whose sum is σ = 31814832. Its totient is φ = 15907412.

The previous prime is 23861119. The next prime is 23861129. The reversal of 23861121 is 12116832.

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 cyclic number.

It is not a de Polignac number, because 23861121 - 2¹ = 23861119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23861091 and 23861100.

It is not an unprimeable number, because it can be changed into a prime (23861129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3976851 + ... + 3976856.

It is an arithmetic number, because the mean of its divisors is an integer number (7953708).

Almost surely, 2^23861121 is an apocalyptic number.

It is an amenable number.

23861121 is a deficient number, since it is larger than the sum of its proper divisors (7953711).

23861121 is an equidigital number, since it uses as much as digits as its factorization.

23861121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953710.

The product of its digits is 576, while the sum is 24.

The square root of 23861121 is about 4884.7846421311. The cubic root of 23861121 is about 287.8924535752.

Adding to 23861121 its reverse (12116832), we get a palindrome (35977953).

The spelling of 23861121 in words is "twenty-three million, eight hundred sixty-one thousand, one hundred twenty-one".