31941358812 has 216 divisors, whose sum is σ = 95707619280. Its totient is φ = 8945164800.

The previous prime is 31941358807. The next prime is 31941358819. The reversal of 31941358812 is 21885314913.

31941358812 is a `hidden beast` number, since 3 + 19 + 41 + 3 + 588 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31941358819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3388618 + ... + 3398030.

It is an arithmetic number, because the mean of its divisors is an integer number (443090830).

Almost surely, 2^31941358812 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 31941358812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47853809640).

31941358812 is an abundant number, since it is smaller than the sum of its proper divisors (63766260468).

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

31941358812 is a wasteful number, since it uses less digits than its factorization.

31941358812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9505 (or 9489 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

It can be divided in two parts, 319413 and 58812, that added together give a square (378225 = 615²).

The spelling of 31941358812 in words is "thirty-one billion, nine hundred forty-one million, three hundred fifty-eight thousand, eight hundred twelve".