43401134423 has 4 divisors (see below), whose sum is σ = 43411372368. Its totient is φ = 43390896480.

The previous prime is 43401134407. The next prime is 43401134429. The reversal of 43401134423 is 32443110434.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43401134423 - 2⁴ = 43401134407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43401134429) 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 3 ways as a sum of consecutive naturals, for example, 5112611 + ... + 5121092.

It is an arithmetic number, because the mean of its divisors is an integer number (10852843092).

Almost surely, 2^43401134423 is an apocalyptic number.

43401134423 is a deficient number, since it is larger than the sum of its proper divisors (10237945).

43401134423 is a wasteful number, since it uses less digits than its factorization.

43401134423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10237944.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 43401134423 its reverse (32443110434), we get a palindrome (75844244857).

The spelling of 43401134423 in words is "forty-three billion, four hundred one million, one hundred thirty-four thousand, four hundred twenty-three".