31487416768 has 168 divisors, whose sum is σ = 67557784112. Its totient is φ = 14547714048.

The previous prime is 31487416757. The next prime is 31487416771. The reversal of 31487416768 is 86761478413.

It is a congruent number.

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, 193174255 + ... + 193174417.

Almost surely, 2^31487416768 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 31487416768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33778892056).

31487416768 is an abundant number, since it is smaller than the sum of its proper divisors (36070367344).

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

31487416768 is a wasteful number, since it uses less digits than its factorization.

31487416768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 328 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 55.

The spelling of 31487416768 in words is "thirty-one billion, four hundred eighty-seven million, four hundred sixteen thousand, seven hundred sixty-eight".