43670023 has 2 divisors, whose sum is σ = 43670024. Its totient is φ = 43670022.

The previous prime is 43670009. The next prime is 43670063. The reversal of 43670023 is 32007634.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43670023 - 2²⁵ = 10115591 is a prime.

It is equal to p_2642614 and since 43670023 and 2642614 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43670023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43670063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21835011 + 21835012.

It is an arithmetic number, because the mean of its divisors is an integer number (21835012).

Almost surely, 2^43670023 is an apocalyptic number.

43670023 is a deficient number, since it is larger than the sum of its proper divisors (1).

43670023 is an equidigital number, since it uses as much as digits as its factorization.

43670023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 43670023 is about 6608.3298192509. The cubic root of 43670023 is about 352.1500925644.

Adding to 43670023 its reverse (32007634), we get a palindrome (75677657).

The spelling of 43670023 in words is "forty-three million, six hundred seventy thousand, twenty-three".