43606931 has 2 divisors, whose sum is σ = 43606932. Its totient is φ = 43606930.

The previous prime is 43606909. The next prime is 43606939. The reversal of 43606931 is 13960634.

It is a happy number.

43606931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43606931 is a prime.

It is a super-2 number, since 2×43606931² = 3803128862477522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43606939) 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 as a sum of consecutive naturals, namely, 21803465 + 21803466.

It is an arithmetic number, because the mean of its divisors is an integer number (21803466).

Almost surely, 2^43606931 is an apocalyptic number.

43606931 is a deficient number, since it is larger than the sum of its proper divisors (1).

43606931 is an equidigital number, since it uses as much as digits as its factorization.

43606931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 43606931 is about 6603.5544216732. The cubic root of 43606931 is about 351.9804219268.

The spelling of 43606931 in words is "forty-three million, six hundred six thousand, nine hundred thirty-one".