31943986542000 has 480 divisors, whose sum is σ = 120650750316096. Its totient is φ = 7830494208000.

The previous prime is 31943986541983. The next prime is 31943986542007. The reversal of 31943986542000 is 24568934913.

31943986542000 is a `hidden beast` number, since 3 + 1 + 9 + 4 + 3 + 98 + 6 + 542 + 0 + 0 + 0 = 666.

It is a super-3 number, since 3×31943986542000³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (31943986542007) 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 95 ways as a sum of consecutive naturals, for example, 56110779 + ... + 56677221.

Almost surely, 2^{31943986542000} is an apocalyptic number.

31943986542000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31943986542000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60325375158048).

31943986542000 is an abundant number, since it is smaller than the sum of its proper divisors (88706763774096).

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

31943986542000 is a wasteful number, since it uses less digits than its factorization.

31943986542000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566726 (or 566707 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 31943986542000 in words is "thirty-one trillion, nine hundred forty-three billion, nine hundred eighty-six million, five hundred forty-two thousand".