31942559712 has 384 divisors, whose sum is σ = 104106885120. Its totient is φ = 8375685120.

The previous prime is 31942559657. The next prime is 31942559749. The reversal of 31942559712 is 21795524913.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 78098964 + ... + 78099372.

It is an arithmetic number, because the mean of its divisors is an integer number (271111680).

Almost surely, 2^31942559712 is an apocalyptic number.

31942559712 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 31942559712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52053442560).

31942559712 is an abundant number, since it is smaller than the sum of its proper divisors (72164325408).

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

31942559712 is a wasteful number, since it uses less digits than its factorization.

31942559712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 638 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The spelling of 31942559712 in words is "thirty-one billion, nine hundred forty-two million, five hundred fifty-nine thousand, seven hundred twelve".