43123214023 has 4 divisors (see below), whose sum is σ = 43133343480. Its totient is φ = 43113084568.

The previous prime is 43123214003. The next prime is 43123214039. The reversal of 43123214023 is 32041232134.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43123214023 is a prime.

It is a super-2 number, since 2×43123214023² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43123214003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5058340 + ... + 5066857.

It is an arithmetic number, because the mean of its divisors is an integer number (10783335870).

Almost surely, 2^43123214023 is an apocalyptic number.

43123214023 is a deficient number, since it is larger than the sum of its proper divisors (10129457).

43123214023 is a wasteful number, since it uses less digits than its factorization.

43123214023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10129456.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 43123214023 its reverse (32041232134), we get a palindrome (75164446157).

The spelling of 43123214023 in words is "forty-three billion, one hundred twenty-three million, two hundred fourteen thousand, twenty-three".