31664753 has 2 divisors, whose sum is σ = 31664754. Its totient is φ = 31664752.

The previous prime is 31664741. The next prime is 31664771. The reversal of 31664753 is 35746613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29724304 + 1940449 = 5452^2 + 1393^2 .

It is a cyclic number.

It is not a de Polignac number, because 31664753 - 2⁸ = 31664497 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31664053) by changing a digit.

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 as a sum of consecutive naturals, namely, 15832376 + 15832377.

It is an arithmetic number, because the mean of its divisors is an integer number (15832377).

Almost surely, 2^31664753 is an apocalyptic number.

It is an amenable number.

31664753 is a deficient number, since it is larger than the sum of its proper divisors (1).

31664753 is an equidigital number, since it uses as much as digits as its factorization.

31664753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 35.

The square root of 31664753 is about 5627.1443023971. The cubic root of 31664753 is about 316.3676254792.

The spelling of 31664753 in words is "thirty-one million, six hundred sixty-four thousand, seven hundred fifty-three".