85136331 has 8 divisors (see below), whose sum is σ = 129731584. Its totient is φ = 48649320.

The previous prime is 85136329. The next prime is 85136333. The reversal of 85136331 is 13363158.

It is an interprime number because it is at equal distance from previous prime (85136329) and next prime (85136333).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85136331 - 2¹ = 85136329 is a prime.

It is a super-2 number, since 2×85136331² = 14496389712283122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85136333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2027035 + ... + 2027076.

It is an arithmetic number, because the mean of its divisors is an integer number (16216448).

Almost surely, 2^85136331 is an apocalyptic number.

85136331 is a deficient number, since it is larger than the sum of its proper divisors (44595253).

85136331 is a wasteful number, since it uses less digits than its factorization.

85136331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054121.

The product of its digits is 6480, while the sum is 30.

The square root of 85136331 is about 9226.9350815967. The cubic root of 85136331 is about 439.9179099610.

Adding to 85136331 its reverse (13363158), we get a palindrome (98499489).

The spelling of 85136331 in words is "eighty-five million, one hundred thirty-six thousand, three hundred thirty-one".