31838454228 has 144 divisors (see below), whose sum is σ = 89832456000. Its totient is φ = 8740408320.

The previous prime is 31838454209. The next prime is 31838454289. The reversal of 31838454228 is 82245483813.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 3593548 + ... + 3602396.

It is an arithmetic number, because the mean of its divisors is an integer number (623836500).

Almost surely, 2^31838454228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31838454228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44916228000).

31838454228 is an abundant number, since it is smaller than the sum of its proper divisors (57994001772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31838454228 is a wasteful number, since it uses less digits than its factorization.

31838454228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110 (or 9101 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 48.

The spelling of 31838454228 in words is "thirty-one billion, eight hundred thirty-eight million, four hundred fifty-four thousand, two hundred twenty-eight".