85311263 has 2 divisors, whose sum is σ = 85311264. Its totient is φ = 85311262.

The previous prime is 85311241. The next prime is 85311299. The reversal of 85311263 is 36211358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85311263 - 2¹⁸ = 85049119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85311223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42655631 + 42655632.

It is an arithmetic number, because the mean of its divisors is an integer number (42655632).

Almost surely, 2^85311263 is an apocalyptic number.

85311263 is a deficient number, since it is larger than the sum of its proper divisors (1).

85311263 is an equidigital number, since it uses as much as digits as its factorization.

85311263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 85311263 is about 9236.4096379492. The cubic root of 85311263 is about 440.2190077075.

The spelling of 85311263 in words is "eighty-five million, three hundred eleven thousand, two hundred sixty-three".