43432131 has 4 divisors (see below), whose sum is σ = 57909512. Its totient is φ = 28954752.

The previous prime is 43432099. The next prime is 43432171. The reversal of 43432131 is 13123434.

43432131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 43432131 - 2⁵ = 43432099 is a prime.

It is a super-2 number, since 2×43432131² = 3772700006402322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43432098 and 43432107.

It is not an unprimeable number, because it can be changed into a prime (43432171) 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 3 ways as a sum of consecutive naturals, for example, 7238686 + ... + 7238691.

It is an arithmetic number, because the mean of its divisors is an integer number (14477378).

Almost surely, 2^43432131 is an apocalyptic number.

43432131 is a deficient number, since it is larger than the sum of its proper divisors (14477381).

43432131 is a wasteful number, since it uses less digits than its factorization.

43432131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14477380.

The product of its digits is 864, while the sum is 21.

The square root of 43432131 is about 6590.3058350884. The cubic root of 43432131 is about 351.5094832488.

Adding to 43432131 its reverse (13123434), we get a palindrome (56555565).

The spelling of 43432131 in words is "forty-three million, four hundred thirty-two thousand, one hundred thirty-one".