43423032231 has 32 divisors (see below), whose sum is σ = 70051296000. Its totient is φ = 26479371744.

The previous prime is 43423032209. The next prime is 43423032239. The reversal of 43423032231 is 13223032434.

43423032231 is a `hidden beast` number, since 4 + 3 + 423 + 0 + 3 + 2 + 231 = 666.

It is not a de Polignac number, because 43423032231 - 2¹³ = 43423024039 is a prime.

It is a super-2 number, since 2×43423032231² (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 = 43423032195 and 43423032204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43423032239) 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, 1444525 + ... + 1474278.

It is an arithmetic number, because the mean of its divisors is an integer number (2189103000).

Almost surely, 2^43423032231 is an apocalyptic number.

43423032231 is a deficient number, since it is larger than the sum of its proper divisors (26628263769).

43423032231 is a wasteful number, since it uses less digits than its factorization.

43423032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918860 (or 2918854 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 43423032231 its reverse (13223032434), we get a palindrome (56646064665).

The spelling of 43423032231 in words is "forty-three billion, four hundred twenty-three million, thirty-two thousand, two hundred thirty-one".