31140543798 has 576 divisors, whose sum is σ = 95305025088. Its totient is φ = 7524679680.

The previous prime is 31140543779. The next prime is 31140543827. The reversal of 31140543798 is 89734504113.

31140543798 is a `hidden beast` number, since 3 + 1 + 14 + 0 + 543 + 7 + 98 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 321036486 + ... + 321036582.

It is an arithmetic number, because the mean of its divisors is an integer number (165460113).

Almost surely, 2^31140543798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31140543798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47652512544).

31140543798 is an abundant number, since it is smaller than the sum of its proper divisors (64164481290).

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

31140543798 is a wasteful number, since it uses less digits than its factorization.

31140543798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 31140543798 in words is "thirty-one billion, one hundred forty million, five hundred forty-three thousand, seven hundred ninety-eight".