31827728228 has 12 divisors (see below), whose sum is σ = 56219072112. Its totient is φ = 15765136200.

The previous prime is 31827728203. The next prime is 31827728243. The reversal of 31827728228 is 82282772813.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37181498 + ... + 37182353.

It is an arithmetic number, because the mean of its divisors is an integer number (4684922676).

Almost surely, 2^31827728228 is an apocalyptic number.

It is an amenable number.

31827728228 is a deficient number, since it is larger than the sum of its proper divisors (24391343884).

31827728228 is a wasteful number, since it uses less digits than its factorization.

31827728228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74363962 (or 74363960 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 50.

The spelling of 31827728228 in words is "thirty-one billion, eight hundred twenty-seven million, seven hundred twenty-eight thousand, two hundred twenty-eight".