31946973 has 4 divisors (see below), whose sum is σ = 42595968. Its totient is φ = 21297980.

The previous prime is 31946939. The next prime is 31946989. The reversal of 31946973 is 37964913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31946973 - 2⁶ = 31946909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31946903) 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 3 ways as a sum of consecutive naturals, for example, 5324493 + ... + 5324498.

It is an arithmetic number, because the mean of its divisors is an integer number (10648992).

Almost surely, 2^31946973 is an apocalyptic number.

It is an amenable number.

31946973 is a deficient number, since it is larger than the sum of its proper divisors (10648995).

31946973 is a wasteful number, since it uses less digits than its factorization.

31946973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10648994.

The product of its digits is 122472, while the sum is 42.

The square root of 31946973 is about 5652.1653372845. The cubic root of 31946973 is about 317.3047486149.

The spelling of 31946973 in words is "thirty-one million, nine hundred forty-six thousand, nine hundred seventy-three".