23182121 has 4 divisors (see below), whose sum is σ = 23196372. Its totient is φ = 23167872.

The previous prime is 23182087. The next prime is 23182123. The reversal of 23182121 is 12128132.

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 1466521 + 21715600 = 1211^2 + 4660^2 .

It is a cyclic number.

It is not a de Polignac number, because 23182121 - 2⁶ = 23182057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23182093 and 23182102.

It is not an unprimeable number, because it can be changed into a prime (23182123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4316 + ... + 8061.

It is an arithmetic number, because the mean of its divisors is an integer number (5799093).

Almost surely, 2^23182121 is an apocalyptic number.

It is an amenable number.

23182121 is a deficient number, since it is larger than the sum of its proper divisors (14251).

23182121 is a wasteful number, since it uses less digits than its factorization.

23182121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14250.

The product of its digits is 192, while the sum is 20.

The square root of 23182121 is about 4814.7815111384. The cubic root of 23182121 is about 285.1353455843.

The spelling of 23182121 in words is "twenty-three million, one hundred eighty-two thousand, one hundred twenty-one".