43401023 has 16 divisors (see below), whose sum is σ = 48384000. Its totient is φ = 38771040.

The previous prime is 43400999. The next prime is 43401031. The reversal of 43401023 is 32010434.

It is a cyclic number.

It is not a de Polignac number, because 43401023 - 2¹⁴ = 43384639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43400992 and 43401010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43401923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19628 + ... + 21726.

It is an arithmetic number, because the mean of its divisors is an integer number (3024000).

Almost surely, 2^43401023 is an apocalyptic number.

43401023 is a deficient number, since it is larger than the sum of its proper divisors (4982977).

43401023 is a wasteful number, since it uses less digits than its factorization.

43401023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 43401023 is about 6587.9452790684. The cubic root of 43401023 is about 351.4255410272.

Adding to 43401023 its reverse (32010434), we get a palindrome (75411457).

The spelling of 43401023 in words is "forty-three million, four hundred one thousand, twenty-three".