43323442431 has 32 divisors (see below), whose sum is σ = 61481164800. Its totient is φ = 27091864800.

The previous prime is 43323442417. The next prime is 43323442511. The reversal of 43323442431 is 13424432334.

It is a happy number.

It is not a de Polignac number, because 43323442431 - 2⁹ = 43323441919 is a prime.

It is a super-2 number, since 2×43323442431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43323442392 and 43323442401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43323442831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 482520 + ... + 565218.

It is an arithmetic number, because the mean of its divisors is an integer number (1921286400).

Almost surely, 2^43323442431 is an apocalyptic number.

43323442431 is a deficient number, since it is larger than the sum of its proper divisors (18157722369).

43323442431 is a wasteful number, since it uses less digits than its factorization.

43323442431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82907.

The product of its digits is 82944, while the sum is 33.

Adding to 43323442431 its reverse (13424432334), we get a palindrome (56747874765).

The spelling of 43323442431 in words is "forty-three billion, three hundred twenty-three million, four hundred forty-two thousand, four hundred thirty-one".