23145201 has 12 divisors (see below), whose sum is σ = 33497412. Its totient is φ = 15399936.

The previous prime is 23145179. The next prime is 23145203. The reversal of 23145201 is 10254132.

It can be written as a sum of positive squares in 2 ways, for example, as 20711601 + 2433600 = 4551^2 + 1560^2 .

It is not a de Polignac number, because 23145201 - 2¹⁷ = 23014129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23145203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2965 + ... + 7421.

It is an arithmetic number, because the mean of its divisors is an integer number (2791451).

Almost surely, 2^23145201 is an apocalyptic number.

It is an amenable number.

23145201 is a deficient number, since it is larger than the sum of its proper divisors (10352211).

23145201 is a wasteful number, since it uses less digits than its factorization.

23145201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040 (or 5037 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 23145201 is about 4810.9459568779. The cubic root of 23145201 is about 284.9838956736.

Adding to 23145201 its reverse (10254132), we get a palindrome (33399333).

The spelling of 23145201 in words is "twenty-three million, one hundred forty-five thousand, two hundred one".