23047121 has 4 divisors (see below), whose sum is σ = 24402852. Its totient is φ = 21691392.

The previous prime is 23047109. The next prime is 23047151. The reversal of 23047121 is 12174032.

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 11316496 + 11730625 = 3364^2 + 3425^2 .

It is a cyclic number.

It is not a de Polignac number, because 23047121 - 2¹⁸ = 22784977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23047093 and 23047102.

It is not an unprimeable number, because it can be changed into a prime (23047151) 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, 677840 + ... + 677873.

It is an arithmetic number, because the mean of its divisors is an integer number (6100713).

Almost surely, 2^23047121 is an apocalyptic number.

It is an amenable number.

23047121 is a deficient number, since it is larger than the sum of its proper divisors (1355731).

23047121 is a wasteful number, since it uses less digits than its factorization.

23047121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355730.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 23047121 is about 4800.7417135272. The cubic root of 23047121 is about 284.5807768919.

The spelling of 23047121 in words is "twenty-three million, forty-seven thousand, one hundred twenty-one".