31437971712 has 216 divisors, whose sum is σ = 103879513920. Its totient is φ = 8957399040.

The previous prime is 31437971699. The next prime is 31437971771. The reversal of 31437971712 is 21717973413.

It is a nude number because it is divisible by every one of its digits.

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, 6271287 + ... + 6276297.

Almost surely, 2^31437971712 is an apocalyptic number.

31437971712 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 31437971712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51939756960).

31437971712 is an abundant number, since it is smaller than the sum of its proper divisors (72441542208).

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

31437971712 is a wasteful number, since it uses less digits than its factorization.

31437971712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5429 (or 5412 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The spelling of 31437971712 in words is "thirty-one billion, four hundred thirty-seven million, nine hundred seventy-one thousand, seven hundred twelve".