85256311 has 4 divisors (see below), whose sum is σ = 97435792. Its totient is φ = 73076832.

The previous prime is 85256291. The next prime is 85256341. The reversal of 85256311 is 11365258.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85256311 - 2²¹ = 83159159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85256341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6089730 + ... + 6089743.

It is an arithmetic number, because the mean of its divisors is an integer number (24358948).

Almost surely, 2^85256311 is an apocalyptic number.

85256311 is a deficient number, since it is larger than the sum of its proper divisors (12179481).

85256311 is a wasteful number, since it uses less digits than its factorization.

85256311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12179480.

The product of its digits is 7200, while the sum is 31.

The square root of 85256311 is about 9233.4344097957. The cubic root of 85256311 is about 440.1244671979.

The spelling of 85256311 in words is "eighty-five million, two hundred fifty-six thousand, three hundred eleven".