31684750842 has 16 divisors (see below), whose sum is σ = 63437725440. Its totient is φ = 10550212992.

The previous prime is 31684750763. The next prime is 31684750871. The reversal of 31684750842 is 24805748613.

It is a junction number, because it is equal to n+sod(n) for n = 31684750791 and 31684750800.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2836618 + ... + 2847765.

It is an arithmetic number, because the mean of its divisors is an integer number (3964857840).

Almost surely, 2^31684750842 is an apocalyptic number.

31684750842 is an abundant number, since it is smaller than the sum of its proper divisors (31752974598).

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

31684750842 is a wasteful number, since it uses less digits than its factorization.

31684750842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685317.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 31684750842 in words is "thirty-one billion, six hundred eighty-four million, seven hundred fifty thousand, eight hundred forty-two".