43123200011 has 4 divisors (see below), whose sum is σ = 43433439000. Its totient is φ = 42812961024.

The previous prime is 43123199981. The next prime is 43123200037. The reversal of 43123200011 is 11000232134.

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 43123200011 - 2⁶ = 43123199947 is a prime.

It is a super-2 number, since 2×43123200011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43123200061) 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, 155119286 + ... + 155119563.

It is an arithmetic number, because the mean of its divisors is an integer number (10858359750).

Almost surely, 2^43123200011 is an apocalyptic number.

43123200011 is a deficient number, since it is larger than the sum of its proper divisors (310238989).

43123200011 is a wasteful number, since it uses less digits than its factorization.

43123200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310238988.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 43123200011 its reverse (11000232134), we get a palindrome (54123432145).

The spelling of 43123200011 in words is "forty-three billion, one hundred twenty-three million, two hundred thousand, eleven".