31981849422 has 32 divisors (see below), whose sum is σ = 66546991104. Its totient is φ = 10235484000.

The previous prime is 31981849409. The next prime is 31981849429. The reversal of 31981849422 is 22494818913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31981849429) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 653329 + ... + 700572.

It is an arithmetic number, because the mean of its divisors is an integer number (2079593472).

Almost surely, 2^31981849422 is an apocalyptic number.

31981849422 is an abundant number, since it is smaller than the sum of its proper divisors (34565141682).

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

31981849422 is a wasteful number, since it uses less digits than its factorization.

31981849422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354064.

The product of its digits is 995328, while the sum is 51.

The spelling of 31981849422 in words is "thirty-one billion, nine hundred eighty-one million, eight hundred forty-nine thousand, four hundred twenty-two".