31944965 has 8 divisors (see below), whose sum is σ = 41282808. Its totient is φ = 23590080.

The previous prime is 31944943. The next prime is 31944971. The reversal of 31944965 is 56944913.

It can be written as a sum of positive squares in 4 ways, for example, as 1760929 + 30184036 = 1327^2 + 5494^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31944965 - 2⁸ = 31944709 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 245666 + ... + 245795.

It is an arithmetic number, because the mean of its divisors is an integer number (5160351).

Almost surely, 2^31944965 is an apocalyptic number.

It is an amenable number.

31944965 is a deficient number, since it is larger than the sum of its proper divisors (9337843).

31944965 is a wasteful number, since it uses less digits than its factorization.

31944965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491479.

The product of its digits is 116640, while the sum is 41.

The square root of 31944965 is about 5651.9877034544. The cubic root of 31944965 is about 317.2981005017.

The spelling of 31944965 in words is "thirty-one million, nine hundred forty-four thousand, nine hundred sixty-five".