31350814686 has 24 divisors (see below), whose sum is σ = 68319412200. Its totient is φ = 10389864336.

The previous prime is 31350814667. The next prime is 31350814687. The reversal of 31350814686 is 68641805313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31350814687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5030736 + ... + 5036963.

It is an arithmetic number, because the mean of its divisors is an integer number (2846642175).

Almost surely, 2^31350814686 is an apocalyptic number.

31350814686 is an abundant number, since it is smaller than the sum of its proper divisors (36968597514).

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

31350814686 is a wasteful number, since it uses less digits than its factorization.

31350814686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067880 (or 10067877 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 31350814686 in words is "thirty-one billion, three hundred fifty million, eight hundred fourteen thousand, six hundred eighty-six".