85719311 has 2 divisors, whose sum is σ = 85719312. Its totient is φ = 85719310.

The previous prime is 85719259. The next prime is 85719313. The reversal of 85719311 is 11391758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85719311 - 2¹⁴ = 85702927 is a prime.

Together with 85719313, 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 (85719313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42859655 + 42859656.

It is an arithmetic number, because the mean of its divisors is an integer number (42859656).

Almost surely, 2^85719311 is an apocalyptic number.

85719311 is a deficient number, since it is larger than the sum of its proper divisors (1).

85719311 is an equidigital number, since it uses as much as digits as its factorization.

85719311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 35.

The square root of 85719311 is about 9258.4723901948. The cubic root of 85719311 is about 440.9197547684.

The spelling of 85719311 in words is "eighty-five million, seven hundred nineteen thousand, three hundred eleven".