23145273 has 6 divisors (see below), whose sum is σ = 33432074. Its totient is φ = 15430176.

The previous prime is 23145271. The next prime is 23145281. The reversal of 23145273 is 37254132.

It can be written as a sum of positive squares in only one way, i.e., 16426809 + 6718464 = 4053^2 + 2592^2 .

It is not a de Polignac number, because 23145273 - 2¹ = 23145271 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23145271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1285840 + ... + 1285857.

Almost surely, 2^23145273 is an apocalyptic number.

It is an amenable number.

23145273 is a deficient number, since it is larger than the sum of its proper divisors (10286801).

23145273 is a wasteful number, since it uses less digits than its factorization.

23145273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571703 (or 2571700 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 23145273 is about 4810.9534398080. The cubic root of 23145273 is about 284.9841911822.

The spelling of 23145273 in words is "twenty-three million, one hundred forty-five thousand, two hundred seventy-three".