31804031929384 has 128 divisors (see below), whose sum is σ = 74094600384000. Its totient is φ = 12582098323200.

The previous prime is 31804031929363. The next prime is 31804031929409. The reversal of 31804031929384 is 48392913040813.

It is a super-2 number, since 2×31804031929384² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1119007 + ... + 8053585.

It is an arithmetic number, because the mean of its divisors is an integer number (578864065500).

Almost surely, 2^{31804031929384} 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 31804031929384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37047300192000).

31804031929384 is an abundant number, since it is smaller than the sum of its proper divisors (42290568454616).

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

31804031929384 is a wasteful number, since it uses less digits than its factorization.

31804031929384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6934839 (or 6934835 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 31804031929384 in words is "thirty-one trillion, eight hundred four billion, thirty-one million, nine hundred twenty-nine thousand, three hundred eighty-four".