85310287 has 2 divisors, whose sum is σ = 85310288. Its totient is φ = 85310286.

The previous prime is 85310261. The next prime is 85310293. The reversal of 85310287 is 78201358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85310287 - 2¹⁵ = 85277519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85310207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42655143 + 42655144.

It is an arithmetic number, because the mean of its divisors is an integer number (42655144).

Almost surely, 2^85310287 is an apocalyptic number.

85310287 is a deficient number, since it is larger than the sum of its proper divisors (1).

85310287 is an equidigital number, since it uses as much as digits as its factorization.

85310287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 85310287 is about 9236.3568034155. The cubic root of 85310287 is about 440.2173289319.

The spelling of 85310287 in words is "eighty-five million, three hundred ten thousand, two hundred eighty-seven".