31085796 has 72 divisors (see below), whose sum is σ = 87333120. Its totient is φ = 8570688.

The previous prime is 31085731. The next prime is 31085801. The reversal of 31085796 is 69758013.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16141 + ... + 17963.

It is an arithmetic number, because the mean of its divisors is an integer number (1212960).

Almost surely, 2^31085796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31085796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43666560).

31085796 is an abundant number, since it is smaller than the sum of its proper divisors (56247324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31085796 is a wasteful number, since it uses less digits than its factorization.

31085796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873 (or 1864 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 31085796 is about 5575.4637475281. The cubic root of 31085796 is about 314.4276024818.

The spelling of 31085796 in words is "thirty-one million, eighty-five thousand, seven hundred ninety-six".