43131224331 has 40 divisors (see below), whose sum is σ = 73468400544. Its totient is φ = 24980970240.

The previous prime is 43131224249. The next prime is 43131224447. The reversal of 43131224331 is 13342213134.

It is a happy number.

43131224331 is a `hidden beast` number, since 4 + 313 + 12 + 2 + 4 + 331 = 666.

It is not a de Polignac number, because 43131224331 - 2¹⁰ = 43131223307 is a prime.

It is a super-2 number, since 2×43131224331² (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 junction number, because it is equal to n+sod(n) for n = 43131224295 and 43131224304.

It is not an unprimeable number, because it can be changed into a prime (43131229331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1186815 + ... + 1222616.

Almost surely, 2^43131224331 is an apocalyptic number.

43131224331 is a deficient number, since it is larger than the sum of its proper divisors (30337176213).

43131224331 is a wasteful number, since it uses less digits than its factorization.

43131224331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409473 (or 2409464 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 43131224331 its reverse (13342213134), we get a palindrome (56473437465).

The spelling of 43131224331 in words is "forty-three billion, one hundred thirty-one million, two hundred twenty-four thousand, three hundred thirty-one".