43340231331 has 8 divisors (see below), whose sum is σ = 64207750160. Its totient is φ = 28893487536.

The previous prime is 43340231323. The next prime is 43340231383. The reversal of 43340231331 is 13313204334.

43340231331 is a `hidden beast` number, since 4 + 3 + 340 + 2 + 313 + 3 + 1 = 666.

43340231331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43340231331 - 2³ = 43340231323 is a prime.

It is a super-2 number, since 2×43340231331² (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), and also a Moran number because the ratio is a prime number: 1605193753 = 43340231331 / (4 + 3 + 3 + 4 + 0 + 2 + 3 + 1 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43340231295 and 43340231304.

It is not an unprimeable number, because it can be changed into a prime (43340231321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802596850 + ... + 802596903.

It is an arithmetic number, because the mean of its divisors is an integer number (8025968770).

Almost surely, 2^43340231331 is an apocalyptic number.

43340231331 is a deficient number, since it is larger than the sum of its proper divisors (20867518829).

43340231331 is a wasteful number, since it uses less digits than its factorization.

43340231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605193762 (or 1605193756 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 43340231331 its reverse (13313204334), we get a palindrome (56653435665).

The spelling of 43340231331 in words is "forty-three billion, three hundred forty million, two hundred thirty-one thousand, three hundred thirty-one".