31596978009828 has 288 divisors, whose sum is σ = 100713130382592. Its totient is φ = 7515477319680.

The previous prime is 31596978009767. The next prime is 31596978009833. The reversal of 31596978009828 is 82890087969513.

It is a self number, because there is not a number n which added to its sum of digits gives 31596978009828.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3922000 + ... + 8864312.

It is an arithmetic number, because the mean of its divisors is an integer number (349698369384).

Almost surely, 2^{31596978009828} 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 31596978009828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50356565191296).

31596978009828 is an abundant number, since it is smaller than the sum of its proper divisors (69116152372764).

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

31596978009828 is a wasteful number, since it uses less digits than its factorization.

31596978009828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942403 (or 4942390 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 75.

The spelling of 31596978009828 in words is "thirty-one trillion, five hundred ninety-six billion, nine hundred seventy-eight million, nine thousand, eight hundred twenty-eight".