34185143 has 2 divisors, whose sum is σ = 34185144. Its totient is φ = 34185142.

The previous prime is 34185139. The next prime is 34185149. The reversal of 34185143 is 34158143.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34185143 - 2² = 34185139 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34185149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17092571 + 17092572.

It is an arithmetic number, because the mean of its divisors is an integer number (17092572).

Almost surely, 2^34185143 is an apocalyptic number.

34185143 is a deficient number, since it is larger than the sum of its proper divisors (1).

34185143 is an equidigital number, since it uses as much as digits as its factorization.

34185143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 34185143 is about 5846.8062222037. The cubic root of 34185143 is about 324.5481468252.

Subtracting from 34185143 its reverse (34158143), we obtain a cube (27000 = 30³).

The spelling of 34185143 in words is "thirty-four million, one hundred eighty-five thousand, one hundred forty-three".