85160731 has 4 divisors (see below), whose sum is σ = 87237864. Its totient is φ = 83083600.

The previous prime is 85160723. The next prime is 85160741. The reversal of 85160731 is 13706158.

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 85160731 - 2³ = 85160723 is a prime.

It is a super-2 number, since 2×85160731² = 14504700208908722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85160693 and 85160702.

It is not an unprimeable number, because it can be changed into a prime (85160741) 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, 1038505 + ... + 1038586.

It is an arithmetic number, because the mean of its divisors is an integer number (21809466).

Almost surely, 2^85160731 is an apocalyptic number.

85160731 is a deficient number, since it is larger than the sum of its proper divisors (2077133).

85160731 is a wasteful number, since it uses less digits than its factorization.

85160731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077132.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 85160731 is about 9228.2572027442. The cubic root of 85160731 is about 439.9599326463.

Adding to 85160731 its reverse (13706158), we get a palindrome (98866889).

The spelling of 85160731 in words is "eighty-five million, one hundred sixty thousand, seven hundred thirty-one".