31680501 has 8 divisors (see below), whose sum is σ = 42775680. Its totient is φ = 20852832.

The previous prime is 31680487. The next prime is 31680521. The reversal of 31680501 is 10508613.

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

It is a de Polignac number, because none of the positive numbers 2^k-31680501 is a prime.

It is a super-2 number, since 2×31680501² = 2007308287222002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31680521) 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, 66600 + ... + 67073.

It is an arithmetic number, because the mean of its divisors is an integer number (5346960).

Almost surely, 2^31680501 is an apocalyptic number.

It is an amenable number.

31680501 is a deficient number, since it is larger than the sum of its proper divisors (11095179).

31680501 is a wasteful number, since it uses less digits than its factorization.

31680501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133755.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 31680501 is about 5628.5434172617. The cubic root of 31680501 is about 316.4200637182.

The spelling of 31680501 in words is "thirty-one million, six hundred eighty thousand, five hundred one".