31725673 has 16 divisors (see below), whose sum is σ = 37140480. Its totient is φ = 26539200.

The previous prime is 31725667. The next prime is 31725697. The reversal of 31725673 is 37652713.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31725673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31720673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81363 + ... + 81751.

It is an arithmetic number, because the mean of its divisors is an integer number (2321280).

Almost surely, 2^31725673 is an apocalyptic number.

It is an amenable number.

31725673 is a deficient number, since it is larger than the sum of its proper divisors (5414807).

31725673 is a wasteful number, since it uses less digits than its factorization.

31725673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its digits is 26460, while the sum is 34.

The square root of 31725673 is about 5632.5547489572. The cubic root of 31725673 is about 316.5703826695.

The spelling of 31725673 in words is "thirty-one million, seven hundred twenty-five thousand, six hundred seventy-three".