31421106784 has 12 divisors (see below), whose sum is σ = 61860304044. Its totient is φ = 15710553376.

The previous prime is 31421106757. The next prime is 31421106793. The reversal of 31421106784 is 48760112413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490954762 + ... + 490954825.

It is an arithmetic number, because the mean of its divisors is an integer number (5155025337).

Almost surely, 2^31421106784 is an apocalyptic number.

It is an amenable number.

31421106784 is a deficient number, since it is larger than the sum of its proper divisors (30439197260).

31421106784 is an equidigital number, since it uses as much as digits as its factorization.

31421106784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981909597 (or 981909589 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 31421106784 in words is "thirty-one billion, four hundred twenty-one million, one hundred six thousand, seven hundred eighty-four".