31271672 has 16 divisors (see below), whose sum is σ = 58827600. Its totient is φ = 15584320.

The previous prime is 31271659. The next prime is 31271683. The reversal of 31271672 is 27617213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3797 + ... + 8772.

It is an arithmetic number, because the mean of its divisors is an integer number (3676725).

Almost surely, 2^31271672 is an apocalyptic number.

It is an amenable number.

31271672 is a deficient number, since it is larger than the sum of its proper divisors (27555928).

31271672 is a wasteful number, since it uses less digits than its factorization.

31271672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12886 (or 12882 counting only the distinct ones).

The product of its digits is 3528, while the sum is 29.

The square root of 31271672 is about 5592.1080104018. The cubic root of 31271672 is about 315.0530590054.

Adding to 31271672 its reverse (27617213), we get a palindrome (58888885).

The spelling of 31271672 in words is "thirty-one million, two hundred seventy-one thousand, six hundred seventy-two".