31085368 has 16 divisors (see below), whose sum is σ = 61353000. Its totient is φ = 14724576.

The previous prime is 31085363. The next prime is 31085381. The reversal of 31085368 is 86358013.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31085363) 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 3 ways as a sum of consecutive naturals, for example, 102103 + ... + 102406.

Almost surely, 2^31085368 is an apocalyptic number.

31085368 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

31085368 is a deficient number, since it is larger than the sum of its proper divisors (30267632).

31085368 is a wasteful number, since it uses less digits than its factorization.

31085368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204534 (or 204530 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 31085368 is about 5575.4253649385. The cubic root of 31085368 is about 314.4261594258.

The spelling of 31085368 in words is "thirty-one million, eighty-five thousand, three hundred sixty-eight".