31745843712 has 240 divisors, whose sum is σ = 102657215232. Its totient is φ = 9359400960.

The previous prime is 31745843681. The next prime is 31745843729. The reversal of 31745843712 is 21734854713.

31745843712 is a `hidden beast` number, since 31 + 7 + 4 + 584 + 37 + 1 + 2 = 666.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1866993 + ... + 1883919.

Almost surely, 2^31745843712 is an apocalyptic number.

31745843712 is a gapful number since it is divisible by the number (32) 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 31745843712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51328607616).

31745843712 is an abundant number, since it is smaller than the sum of its proper divisors (70911371520).

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

31745843712 is a wasteful number, since it uses less digits than its factorization.

31745843712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16999 (or 16980 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The spelling of 31745843712 in words is "thirty-one billion, seven hundred forty-five million, eight hundred forty-three thousand, seven hundred twelve".