85352831 has 4 divisors (see below), whose sum is σ = 85876632. Its totient is φ = 84829032.

The previous prime is 85352809. The next prime is 85352833. The reversal of 85352831 is 13825358.

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 85352831 - 2¹⁰ = 85351807 is a prime.

It is a super-2 number, since 2×85352831² = 14570211519429122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85352791 and 85352800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85352833) 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, 261656 + ... + 261981.

It is an arithmetic number, because the mean of its divisors is an integer number (21469158).

Almost surely, 2^85352831 is an apocalyptic number.

85352831 is a deficient number, since it is larger than the sum of its proper divisors (523801).

85352831 is a wasteful number, since it uses less digits than its factorization.

85352831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523800.

The product of its digits is 28800, while the sum is 35.

The square root of 85352831 is about 9238.6595889231. The cubic root of 85352831 is about 440.2904951516.

The spelling of 85352831 in words is "eighty-five million, three hundred fifty-two thousand, eight hundred thirty-one".