31838682263808 has 432 divisors, whose sum is σ = 99032709694464. Its totient is φ = 9054340485120.

The previous prime is 31838682263771. The next prime is 31838682263867. The reversal of 31838682263808 is 80836228683813.

It is a super-2 number, since 2×31838682263808² (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 47 ways as a sum of consecutive naturals, for example, 10381049091 + ... + 10381052157.

It is an arithmetic number, because the mean of its divisors is an integer number (229242383552).

Almost surely, 2^{31838682263808} 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 31838682263808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49516354847232).

31838682263808 is an abundant number, since it is smaller than the sum of its proper divisors (67194027430656).

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

31838682263808 is a wasteful number, since it uses less digits than its factorization.

31838682263808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298 (or 4277 counting only the distinct ones).

The product of its (nonzero) digits is 127401984, while the sum is 66.

The spelling of 31838682263808 in words is "thirty-one trillion, eight hundred thirty-eight billion, six hundred eighty-two million, two hundred sixty-three thousand, eight hundred eight".