43103971 has 2 divisors, whose sum is σ = 43103972. Its totient is φ = 43103970.

The previous prime is 43103953. The next prime is 43104037. The reversal of 43103971 is 17930134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43103971 - 2⁵ = 43103939 is a prime.

It is not a weakly prime, because it can be changed into another prime (43103171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21551985 + 21551986.

It is an arithmetic number, because the mean of its divisors is an integer number (21551986).

Almost surely, 2^43103971 is an apocalyptic number.

43103971 is a deficient number, since it is larger than the sum of its proper divisors (1).

43103971 is an equidigital number, since it uses as much as digits as its factorization.

43103971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 43103971 is about 6565.3614523497. The cubic root of 43103971 is about 350.6219444999.

It can be divided in two parts, 4310 and 3971, that added together give a square (8281 = 91²).

The spelling of 43103971 in words is "forty-three million, one hundred three thousand, nine hundred seventy-one".