43115983 has 2 divisors, whose sum is σ = 43115984. Its totient is φ = 43115982.

The previous prime is 43115929. The next prime is 43115999. The reversal of 43115983 is 38951134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43115983 - 2¹³ = 43107791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43115923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21557991 + 21557992.

It is an arithmetic number, because the mean of its divisors is an integer number (21557992).

Almost surely, 2^43115983 is an apocalyptic number.

43115983 is a deficient number, since it is larger than the sum of its proper divisors (1).

43115983 is an equidigital number, since it uses as much as digits as its factorization.

43115983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 34.

The square root of 43115983 is about 6566.2761897441. The cubic root of 43115983 is about 350.6545113341.

The spelling of 43115983 in words is "forty-three million, one hundred fifteen thousand, nine hundred eighty-three".