85311943 has 2 divisors, whose sum is σ = 85311944. Its totient is φ = 85311942.

The previous prime is 85311911. The next prime is 85312013. The reversal of 85311943 is 34911358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85311943 - 2⁵ = 85311911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85311899 and 85311908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85311043) 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, 42655971 + 42655972.

It is an arithmetic number, because the mean of its divisors is an integer number (42655972).

Almost surely, 2^85311943 is an apocalyptic number.

85311943 is a deficient number, since it is larger than the sum of its proper divisors (1).

85311943 is an equidigital number, since it uses as much as digits as its factorization.

85311943 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 85311943 is about 9236.4464487161. The cubic root of 85311943 is about 440.2201773386.

The spelling of 85311943 in words is "eighty-five million, three hundred eleven thousand, nine hundred forty-three".