23148121 has 4 divisors (see below), whose sum is σ = 23584932. Its totient is φ = 22711312.

The previous prime is 23148113. The next prime is 23148127. The reversal of 23148121 is 12184132.

It is a happy number.

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 6656400 + 16491721 = 2580^2 + 4061^2 .

It is a cyclic number.

It is not a de Polignac number, because 23148121 - 2³ = 23148113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23148092 and 23148101.

It is not an unprimeable number, because it can be changed into a prime (23148127) 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, 218326 + ... + 218431.

It is an arithmetic number, because the mean of its divisors is an integer number (5896233).

Almost surely, 2^23148121 is an apocalyptic number.

It is an amenable number.

23148121 is a deficient number, since it is larger than the sum of its proper divisors (436811).

23148121 is an equidigital number, since it uses as much as digits as its factorization.

23148121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436810.

The product of its digits is 384, while the sum is 22.

The square root of 23148121 is about 4811.2494219277. The cubic root of 23148121 is about 284.9958796983.

The spelling of 23148121 in words is "twenty-three million, one hundred forty-eight thousand, one hundred twenty-one".