85124831 has 24 divisors (see below), whose sum is σ = 102558960. Its totient is φ = 70273280.

The previous prime is 85124803. The next prime is 85124833. The reversal of 85124831 is 13842158.

It is not a de Polignac number, because 85124831 - 2¹⁴ = 85108447 is a prime.

It is a super-2 number, since 2×85124831² = 14492473705557122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85124833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58940 + ... + 60366.

It is an arithmetic number, because the mean of its divisors is an integer number (4273290).

Almost surely, 2^85124831 is an apocalyptic number.

85124831 is a deficient number, since it is larger than the sum of its proper divisors (17434129).

85124831 is a wasteful number, since it uses less digits than its factorization.

85124831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1484 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 85124831 is about 9226.3118850384. The cubic root of 85124831 is about 439.8981014034.

Adding to 85124831 its reverse (13842158), we get a palindrome (98966989).

The spelling of 85124831 in words is "eighty-five million, one hundred twenty-four thousand, eight hundred thirty-one".