85234531 has 8 divisors (see below), whose sum is σ = 90131328. Its totient is φ = 80472000.

The previous prime is 85234511. The next prime is 85234543. The reversal of 85234531 is 13543258.

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

It is a cyclic number.

It is not a de Polignac number, because 85234531 - 2¹⁹ = 84710243 is a prime.

It is a super-2 number, since 2×85234531² = 14529850549579922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85234493 and 85234502.

It is not an unprimeable number, because it can be changed into a prime (85234511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32260 + ... + 34801.

It is an arithmetic number, because the mean of its divisors is an integer number (11266416).

Almost surely, 2^85234531 is an apocalyptic number.

85234531 is a deficient number, since it is larger than the sum of its proper divisors (4896797).

85234531 is a wasteful number, since it uses less digits than its factorization.

85234531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67133.

The product of its digits is 14400, while the sum is 31.

The square root of 85234531 is about 9232.2549249899. The cubic root of 85234531 is about 440.0869852129.

Adding to 85234531 its reverse (13543258), we get a palindrome (98777789).

The spelling of 85234531 in words is "eighty-five million, two hundred thirty-four thousand, five hundred thirty-one".