31385734016 has 192 divisors, whose sum is σ = 82940896080. Its totient is φ = 11685445632.

The previous prime is 31385733991. The next prime is 31385734021. The reversal of 31385734016 is 61043758313.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1374791 + ... + 1397433.

Almost surely, 2^31385734016 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 31385734016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41470448040).

31385734016 is an abundant number, since it is smaller than the sum of its proper divisors (51555162064).

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

31385734016 is a wasteful number, since it uses less digits than its factorization.

31385734016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22701 (or 22682 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 31385734016 in words is "thirty-one billion, three hundred eighty-five million, seven hundred thirty-four thousand, sixteen".