31641116 has 12 divisors (see below), whose sum is σ = 59631432. Its totient is φ = 14603568.

The previous prime is 31641101. The next prime is 31641121. The reversal of 31641116 is 61114613.

It is a junction number, because it is equal to n+sod(n) for n = 31641091 and 31641100.

It is a congruent number.

It is an unprimeable number.

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, 304190 + ... + 304293.

It is an arithmetic number, because the mean of its divisors is an integer number (4969286).

Almost surely, 2^31641116 is an apocalyptic number.

It is an amenable number.

31641116 is a deficient number, since it is larger than the sum of its proper divisors (27990316).

31641116 is a wasteful number, since it uses less digits than its factorization.

31641116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608500 (or 608498 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

The square root of 31641116 is about 5625.0436442751. The cubic root of 31641116 is about 316.2888855308.

Adding to 31641116 its reverse (61114613), we get a palindrome (92755729).

The spelling of 31641116 in words is "thirty-one million, six hundred forty-one thousand, one hundred sixteen".