85410631 has 2 divisors, whose sum is σ = 85410632. Its totient is φ = 85410630.

The previous prime is 85410623. The next prime is 85410649. The reversal of 85410631 is 13601458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85410631 - 2³ = 85410623 is a prime.

It is a super-2 number, since 2×85410631² = 14589951775636322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85410631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85410671) 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 as a sum of consecutive naturals, namely, 42705315 + 42705316.

It is an arithmetic number, because the mean of its divisors is an integer number (42705316).

Almost surely, 2^85410631 is an apocalyptic number.

85410631 is a deficient number, since it is larger than the sum of its proper divisors (1).

85410631 is an equidigital number, since it uses as much as digits as its factorization.

85410631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 85410631 is about 9241.7872189312. The cubic root of 85410631 is about 440.3898593552.

The spelling of 85410631 in words is "eighty-five million, four hundred ten thousand, six hundred thirty-one".