31682113 has 4 divisors (see below), whose sum is σ = 31694848. Its totient is φ = 31669380.

The previous prime is 31682107. The next prime is 31682137. The reversal of 31682113 is 31128613.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31682113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31682213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281 + ... + 8062.

It is an arithmetic number, because the mean of its divisors is an integer number (7923712).

Almost surely, 2^31682113 is an apocalyptic number.

It is an amenable number.

31682113 is a deficient number, since it is larger than the sum of its proper divisors (12735).

31682113 is an equidigital number, since it uses as much as digits as its factorization.

31682113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12734.

The product of its digits is 864, while the sum is 25.

The square root of 31682113 is about 5628.6866141223. The cubic root of 31682113 is about 316.4254304314.

The spelling of 31682113 in words is "thirty-one million, six hundred eighty-two thousand, one hundred thirteen".