31435836068 has 72 divisors (see below), whose sum is σ = 69963316416. Its totient is φ = 12034854720.

The previous prime is 31435836031. The next prime is 31435836071. The reversal of 31435836068 is 86063853413.

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, 304871 + ... + 394737.

It is an arithmetic number, because the mean of its divisors is an integer number (971712728).

Almost surely, 2^31435836068 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 31435836068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34981658208).

31435836068 is an abundant number, since it is smaller than the sum of its proper divisors (38527480348).

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

31435836068 is a wasteful number, since it uses less digits than its factorization.

31435836068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89953 (or 89920 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 31435836068 in words is "thirty-one billion, four hundred thirty-five million, eight hundred thirty-six thousand, sixty-eight".