43145235311 has 4 divisors (see below), whose sum is σ = 43149515952. Its totient is φ = 43140954672.

The previous prime is 43145235293. The next prime is 43145235319. The reversal of 43145235311 is 11353254134.

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-43145235311 is a prime.

It is a super-2 number, since 2×43145235311² (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 (43145235319) 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, 2125166 + ... + 2145371.

It is an arithmetic number, because the mean of its divisors is an integer number (10787378988).

Almost surely, 2^43145235311 is an apocalyptic number.

43145235311 is a deficient number, since it is larger than the sum of its proper divisors (4280641).

43145235311 is a wasteful number, since it uses less digits than its factorization.

43145235311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280640.

The product of its digits is 21600, while the sum is 32.

Adding to 43145235311 its reverse (11353254134), we get a palindrome (54498489445).

The spelling of 43145235311 in words is "forty-three billion, one hundred forty-five million, two hundred thirty-five thousand, three hundred eleven".