31680106 has 32 divisors (see below), whose sum is σ = 51782400. Its totient is φ = 14489280.

The previous prime is 31680101. The next prime is 31680113. The reversal of 31680106 is 60108613.

It is not an unprimeable number, because it can be changed into a prime (31680101) 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, 183036 + ... + 183208.

It is an arithmetic number, because the mean of its divisors is an integer number (1618200).

Almost surely, 2^31680106 is an apocalyptic number.

31680106 is a deficient number, since it is larger than the sum of its proper divisors (20102294).

31680106 is a wasteful number, since it uses less digits than its factorization.

31680106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

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

The square root of 31680106 is about 5628.5083281452. The cubic root of 31680106 is about 316.4187486459.

Adding to 31680106 its reverse (60108613), we get a palindrome (91788719).

The spelling of 31680106 in words is "thirty-one million, six hundred eighty thousand, one hundred six".