43023173 has 2 divisors, whose sum is σ = 43023174. Its totient is φ = 43023172.

The previous prime is 43023161. The next prime is 43023221. The reversal of 43023173 is 37132034.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42745444 + 277729 = 6538^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 43023173 - 2⁶ = 43023109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43023103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21511586 + 21511587.

It is an arithmetic number, because the mean of its divisors is an integer number (21511587).

Almost surely, 2^43023173 is an apocalyptic number.

It is an amenable number.

43023173 is a deficient number, since it is larger than the sum of its proper divisors (1).

43023173 is an equidigital number, since it uses as much as digits as its factorization.

43023173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 43023173 is about 6559.2052109993. The cubic root of 43023173 is about 350.4027282589.

The spelling of 43023173 in words is "forty-three million, twenty-three thousand, one hundred seventy-three".