85097131 has 4 divisors (see below), whose sum is σ = 97253872. Its totient is φ = 72940392.

The previous prime is 85097123. The next prime is 85097147. The reversal of 85097131 is 13179058.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13179058 = 2 ⋅6589529.

It is not a de Polignac number, because 85097131 - 2³ = 85097123 is a prime.

It is a super-2 number, since 2×85097131² = 14483043408862322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85097191) 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, 6078360 + ... + 6078373.

It is an arithmetic number, because the mean of its divisors is an integer number (24313468).

Almost surely, 2^85097131 is an apocalyptic number.

85097131 is a deficient number, since it is larger than the sum of its proper divisors (12156741).

85097131 is a wasteful number, since it uses less digits than its factorization.

85097131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12156740.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 85097131 is about 9224.8106213624. The cubic root of 85097131 is about 439.8503812916.

The spelling of 85097131 in words is "eighty-five million, ninety-seven thousand, one hundred thirty-one".