31683197 has 16 divisors (see below), whose sum is σ = 39134592. Its totient is φ = 24978240.

The previous prime is 31683193. The next prime is 31683221. The reversal of 31683197 is 79138613.

It is not a de Polignac number, because 31683197 - 2² = 31683193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31683197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31683191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37898 + ... + 38724.

It is an arithmetic number, because the mean of its divisors is an integer number (2445912).

Almost surely, 2^31683197 is an apocalyptic number.

It is an amenable number.

31683197 is a deficient number, since it is larger than the sum of its proper divisors (7451395).

31683197 is a wasteful number, since it uses less digits than its factorization.

31683197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268.

The product of its digits is 27216, while the sum is 38.

The square root of 31683197 is about 5628.7829057444. The cubic root of 31683197 is about 316.4290392107.

The spelling of 31683197 in words is "thirty-one million, six hundred eighty-three thousand, one hundred ninety-seven".