31712487168 has 288 divisors, whose sum is σ = 91178752000. Its totient is φ = 9755209728.

The previous prime is 31712487161. The next prime is 31712487223. The reversal of 31712487168 is 86178421713.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31712487161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159359133 + ... + 159359331.

Almost surely, 2^31712487168 is an apocalyptic number.

31712487168 is a gapful number since it is divisible by the number (38) 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 31712487168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45589376000).

31712487168 is an abundant number, since it is smaller than the sum of its proper divisors (59466264832).

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

31712487168 is a wasteful number, since it uses less digits than its factorization.

31712487168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 453 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The spelling of 31712487168 in words is "thirty-one billion, seven hundred twelve million, four hundred eighty-seven thousand, one hundred sixty-eight".