31968845 has 4 divisors (see below), whose sum is σ = 38362620. Its totient is φ = 25575072.

The previous prime is 31968803. The next prime is 31968877. The reversal of 31968845 is 54886913.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14638276 + 17330569 = 3826^2 + 4163^2 .

It is a cyclic number.

It is not a de Polignac number, because 31968845 - 2⁸ = 31968589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31968796 and 31968805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3196880 + ... + 3196889.

It is an arithmetic number, because the mean of its divisors is an integer number (9590655).

Almost surely, 2^31968845 is an apocalyptic number.

It is an amenable number.

31968845 is a deficient number, since it is larger than the sum of its proper divisors (6393775).

31968845 is an equidigital number, since it uses as much as digits as its factorization.

31968845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393774.

The product of its digits is 207360, while the sum is 44.

The square root of 31968845 is about 5654.0998399392. The cubic root of 31968845 is about 317.3771446888.

The spelling of 31968845 in words is "thirty-one million, nine hundred sixty-eight thousand, eight hundred forty-five".