43115143 has 2 divisors, whose sum is σ = 43115144. Its totient is φ = 43115142.

The previous prime is 43115131. The next prime is 43115147. The reversal of 43115143 is 34151134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43115143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43115147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21557571 + 21557572.

It is an arithmetic number, because the mean of its divisors is an integer number (21557572).

Almost surely, 2^43115143 is an apocalyptic number.

43115143 is a deficient number, since it is larger than the sum of its proper divisors (1).

43115143 is an equidigital number, since it uses as much as digits as its factorization.

43115143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 43115143 is about 6566.2122262382. The cubic root of 43115143 is about 350.6522341298.

Adding to 43115143 its reverse (34151134), we get a palindrome (77266277).

The spelling of 43115143 in words is "forty-three million, one hundred fifteen thousand, one hundred forty-three".