85403331 has 12 divisors (see below), whose sum is σ = 132849808. Its totient is φ = 52555824.

The previous prime is 85403327. The next prime is 85403341. The reversal of 85403331 is 13330458.

It is a happy number.

It is not a de Polignac number, because 85403331 - 2² = 85403327 is a prime.

It is a super-2 number, since 2×85403331² = 14587457891791122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85403295 and 85403304.

It is not an unprimeable number, because it can be changed into a prime (85403321) 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 11 ways as a sum of consecutive naturals, for example, 364855 + ... + 365088.

Almost surely, 2^85403331 is an apocalyptic number.

85403331 is a deficient number, since it is larger than the sum of its proper divisors (47446477).

85403331 is a wasteful number, since it uses less digits than its factorization.

85403331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729962 (or 729959 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 85403331 is about 9241.3922652380. The cubic root of 85403331 is about 440.3773123708.

Adding to 85403331 its reverse (13330458), we get a palindrome (98733789).

The spelling of 85403331 in words is "eighty-five million, four hundred three thousand, three hundred thirty-one".