31896066 has 16 divisors (see below), whose sum is σ = 64259424. Its totient is φ = 10554144.

The previous prime is 31896061. The next prime is 31896071. The reversal of 31896066 is 66069813.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31896061) and next prime (31896071).

It is not an unprimeable number, because it can be changed into a prime (31896061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18580 + ... + 20223.

It is an arithmetic number, because the mean of its divisors is an integer number (4016214).

Almost surely, 2^31896066 is an apocalyptic number.

31896066 is an abundant number, since it is smaller than the sum of its proper divisors (32363358).

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

31896066 is a wasteful number, since it uses less digits than its factorization.

31896066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38945.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 31896066 is about 5647.6602234908. The cubic root of 31896066 is about 317.1361189682.

The spelling of 31896066 in words is "thirty-one million, eight hundred ninety-six thousand, sixty-six".