32316991 has 16 divisors (see below), whose sum is σ = 38399040. Its totient is φ = 26611200.

The previous prime is 32316961. The next prime is 32317013. The reversal of 32316991 is 19961323.

It is not a de Polignac number, because 32316991 - 2¹⁵ = 32284223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32316931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80391 + ... + 80791.

It is an arithmetic number, because the mean of its divisors is an integer number (2399940).

Almost surely, 2^32316991 is an apocalyptic number.

32316991 is a deficient number, since it is larger than the sum of its proper divisors (6082049).

32316991 is a wasteful number, since it uses less digits than its factorization.

32316991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834.

The product of its digits is 8748, while the sum is 34.

The square root of 32316991 is about 5684.8035146344. The cubic root of 32316991 is about 318.5250841366.

The spelling of 32316991 in words is "thirty-two million, three hundred sixteen thousand, nine hundred ninety-one".