85075431 has 16 divisors (see below), whose sum is σ = 130925568. Its totient is φ = 48132000.

The previous prime is 85075427. The next prime is 85075477. The reversal of 85075431 is 13457058.

It is not a de Polignac number, because 85075431 - 2² = 85075427 is a prime.

It is a super-2 number, since 2×85075431² = 14475657919671522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85075392 and 85075401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85075421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17935 + ... + 22176.

It is an arithmetic number, because the mean of its divisors is an integer number (8182848).

Almost surely, 2^85075431 is an apocalyptic number.

85075431 is a deficient number, since it is larger than the sum of its proper divisors (45850137).

85075431 is a wasteful number, since it uses less digits than its factorization.

85075431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40222.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 85075431 is about 9223.6343704637. The cubic root of 85075431 is about 439.8129904317.

The spelling of 85075431 in words is "eighty-five million, seventy-five thousand, four hundred thirty-one".