43421311143 has 48 divisors (see below), whose sum is σ = 75160546560. Its totient is φ = 24702702192.

The previous prime is 43421311127. The next prime is 43421311163. The reversal of 43421311143 is 34111312434.

43421311143 is a `hidden beast` number, since 4 + 342 + 1 + 311 + 1 + 4 + 3 = 666.

It is not a de Polignac number, because 43421311143 - 2⁴ = 43421311127 is a prime.

It is a super-2 number, since 2×43421311143² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43421311123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228030 + ... + 372612.

It is an arithmetic number, because the mean of its divisors is an integer number (1565844720).

Almost surely, 2^43421311143 is an apocalyptic number.

43421311143 is a deficient number, since it is larger than the sum of its proper divisors (31739235417).

43421311143 is a wasteful number, since it uses less digits than its factorization.

43421311143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144833 (or 144820 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 43421311143 its reverse (34111312434), we get a palindrome (77532623577).

The spelling of 43421311143 in words is "forty-three billion, four hundred twenty-one million, three hundred eleven thousand, one hundred forty-three".