43011905023 has 4 divisors (see below), whose sum is σ = 44012181928. Its totient is φ = 42011628120.

The previous prime is 43011904967. The next prime is 43011905039. The reversal of 43011905023 is 32050911034.

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-43011905023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43011904982 and 43011905000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43011905623) 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, 500138388 + ... + 500138473.

It is an arithmetic number, because the mean of its divisors is an integer number (11003045482).

Almost surely, 2^43011905023 is an apocalyptic number.

43011905023 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

43011905023 is a deficient number, since it is larger than the sum of its proper divisors (1000276905).

43011905023 is a wasteful number, since it uses less digits than its factorization.

43011905023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000276904.

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 43011905023 in words is "forty-three billion, eleven million, nine hundred five thousand, twenty-three".