31858709499904 has 351 divisors, whose sum is σ = 76134655670013. Its totient is φ = 13290687922176.

The previous prime is 31858709499853. The next prime is 31858709499941. The reversal of 31858709499904 is 40999490785813.

The square root of 31858709499904 is 5644352.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 30142735257600 + 1715974242304 = 5490240^2 + 1309952^2 .

It is a Duffinian 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 26 ways as a sum of consecutive naturals, for example, 108732796782 + ... + 108732797074.

Almost surely, 2^{31858709499904} is an apocalyptic number.

31858709499904 is the 5644352-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31858709499904

31858709499904 is an abundant number, since it is smaller than the sum of its proper divisors (44275946170109).

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

31858709499904 is an frugal number, since it uses more digits than its factorization.

31858709499904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 705438720, while the sum is 76.

The spelling of 31858709499904 in words is "thirty-one trillion, eight hundred fifty-eight billion, seven hundred nine million, four hundred ninety-nine thousand, nine hundred four".