85850311 has 2 divisors, whose sum is σ = 85850312. Its totient is φ = 85850310.

The previous prime is 85850309. The next prime is 85850371. The reversal of 85850311 is 11305858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85850311 - 2¹ = 85850309 is a prime.

Together with 85850309, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85850371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42925155 + 42925156.

It is an arithmetic number, because the mean of its divisors is an integer number (42925156).

Almost surely, 2^85850311 is an apocalyptic number.

85850311 is a deficient number, since it is larger than the sum of its proper divisors (1).

85850311 is an equidigital number, since it uses as much as digits as its factorization.

85850311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 85850311 is about 9265.5442905422. The cubic root of 85850311 is about 441.1442513963.

The spelling of 85850311 in words is "eighty-five million, eight hundred fifty thousand, three hundred eleven".