31656106 has 4 divisors (see below), whose sum is σ = 47484162. Its totient is φ = 15828052.

The previous prime is 31656089. The next prime is 31656113. The reversal of 31656106 is 60165613.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23765625 + 7890481 = 4875^2 + 2809^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7914025 + ... + 7914028.

Almost surely, 2^31656106 is an apocalyptic number.

31656106 is a deficient number, since it is larger than the sum of its proper divisors (15828056).

31656106 is a wasteful number, since it uses less digits than its factorization.

31656106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15828055.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 31656106 is about 5626.3759206082. The cubic root of 31656106 is about 316.3388250028.

The spelling of 31656106 in words is "thirty-one million, six hundred fifty-six thousand, one hundred six".