85066031 has 2 divisors, whose sum is σ = 85066032. Its totient is φ = 85066030.

The previous prime is 85066013. The next prime is 85066063. The reversal of 85066031 is 13066058.

Together with previous prime (85066013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85066031 - 2²⁶ = 17957167 is a prime.

It is a super-2 number, since 2×85066031² = 14472459260185922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85065985 and 85066003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85066231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42533015 + 42533016.

It is an arithmetic number, because the mean of its divisors is an integer number (42533016).

Almost surely, 2^85066031 is an apocalyptic number.

85066031 is a deficient number, since it is larger than the sum of its proper divisors (1).

85066031 is an equidigital number, since it uses as much as digits as its factorization.

85066031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 85066031 is about 9223.1247958596. The cubic root of 85066031 is about 439.7967914957.

The spelling of 85066031 in words is "eighty-five million, sixty-six thousand, thirty-one".