43423023 has 16 divisors (see below), whose sum is σ = 66260480. Its totient is φ = 24778656.

The previous prime is 43423019. The next prime is 43423043. The reversal of 43423023 is 32032434.

It is not a de Polignac number, because 43423023 - 2² = 43423019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43423013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29286 + ... + 30732.

It is an arithmetic number, because the mean of its divisors is an integer number (4141280).

Almost surely, 2^43423023 is an apocalyptic number.

43423023 is a deficient number, since it is larger than the sum of its proper divisors (22837457).

43423023 is a wasteful number, since it uses less digits than its factorization.

43423023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 43423023 is about 6589.6147838853. The cubic root of 43423023 is about 351.4849102570.

Adding to 43423023 its reverse (32032434), we get a palindrome (75455457).

The spelling of 43423023 in words is "forty-three million, four hundred twenty-three thousand, twenty-three".