31968841 has 4 divisors (see below), whose sum is σ = 31981312. Its totient is φ = 31956372.

The previous prime is 31968803. The next prime is 31968877. The reversal of 31968841 is 14886913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31968841 - 2¹¹ = 31966793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31968794 and 31968803.

It is not an unprimeable number, because it can be changed into a prime (31965841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825 + ... + 8038.

It is an arithmetic number, because the mean of its divisors is an integer number (7995328).

Almost surely, 2^31968841 is an apocalyptic number.

It is an amenable number.

31968841 is a deficient number, since it is larger than the sum of its proper divisors (12471).

31968841 is an equidigital number, since it uses as much as digits as its factorization.

31968841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12470.

The product of its digits is 41472, while the sum is 40.

The square root of 31968841 is about 5654.0994862135. The cubic root of 31968841 is about 317.3771314519.

The spelling of 31968841 in words is "thirty-one million, nine hundred sixty-eight thousand, eight hundred forty-one".