43131223324 has 24 divisors (see below), whose sum is σ = 86267478528. Its totient is φ = 18483731760.

The previous prime is 43131223321. The next prime is 43131223357. The reversal of 43131223324 is 42332213134.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 43131223292 and 43131223301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43131223321) 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, 612369 + ... + 679159.

It is an arithmetic number, because the mean of its divisors is an integer number (3594478272).

Almost surely, 2^43131223324 is an apocalyptic number.

It is an amenable number.

43131223324 is an abundant number, since it is smaller than the sum of its proper divisors (43136255204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43131223324 is a wasteful number, since it uses less digits than its factorization.

43131223324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89865 (or 89863 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

Adding to 43131223324 its reverse (42332213134), we get a palindrome (85463436458).

The spelling of 43131223324 in words is "forty-three billion, one hundred thirty-one million, two hundred twenty-three thousand, three hundred twenty-four".