85043131 has 16 divisors (see below), whose sum is σ = 89740800. Its totient is φ = 80504928.

The previous prime is 85043117. The next prime is 85043159. The reversal of 85043131 is 13134058.

It is a cyclic number.

It is not a de Polignac number, because 85043131 - 2⁷ = 85043003 is a prime.

It is a super-2 number, since 2×85043131² = 14464668260566322, 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 = 85043096 and 85043105.

It is not an unprimeable number, because it can be changed into a prime (85043191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355710 + ... + 355948.

It is an arithmetic number, because the mean of its divisors is an integer number (5608800).

Almost surely, 2^85043131 is an apocalyptic number.

85043131 is a deficient number, since it is larger than the sum of its proper divisors (4697669).

85043131 is a wasteful number, since it uses less digits than its factorization.

85043131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 85043131 is about 9221.8832675327. The cubic root of 85043131 is about 439.7573231349.

Adding to 85043131 its reverse (13134058), we get a palindrome (98177189).

The spelling of 85043131 in words is "eighty-five million, forty-three thousand, one hundred thirty-one".