31820532282 has 144 divisors (see below), whose sum is σ = 89857359072. Its totient is φ = 8041602240.

The previous prime is 31820532277. The next prime is 31820532313. The reversal of 31820532282 is 28223502813.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 314653 + ... + 403295.

It is an arithmetic number, because the mean of its divisors is an integer number (624009438).

Almost surely, 2^31820532282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31820532282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44928679536).

31820532282 is an abundant number, since it is smaller than the sum of its proper divisors (58036826790).

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

31820532282 is a wasteful number, since it uses less digits than its factorization.

31820532282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88713 (or 88703 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 31820532282 in words is "thirty-one billion, eight hundred twenty million, five hundred thirty-two thousand, two hundred eighty-two".