31680463 has 8 divisors (see below), whose sum is σ = 32457600. Its totient is φ = 30911448.

The previous prime is 31680443. The next prime is 31680487. The reversal of 31680463 is 36408613.

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

It is a cyclic number.

It is not a de Polignac number, because 31680463 - 2¹⁷ = 31549391 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 (31680403) 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 7 ways as a sum of consecutive naturals, for example, 6270 + ... + 10132.

It is an arithmetic number, because the mean of its divisors is an integer number (4057200).

Almost surely, 2^31680463 is an apocalyptic number.

31680463 is a deficient number, since it is larger than the sum of its proper divisors (777137).

31680463 is a wasteful number, since it uses less digits than its factorization.

31680463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 31680463 is about 5628.5400416094. The cubic root of 31680463 is about 316.4199372054.

The spelling of 31680463 in words is "thirty-one million, six hundred eighty thousand, four hundred sixty-three".