31871617446 has 8 divisors (see below), whose sum is σ = 63743234904. Its totient is φ = 10623872480.

The previous prime is 31871617441. The next prime is 31871617489. The reversal of 31871617446 is 64471617813.

It is a sphenic number, since it is the product of 3 distinct primes.

31871617446 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 31871617395 and 31871617404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31871617441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2655968115 + ... + 2655968126.

It is an arithmetic number, because the mean of its divisors is an integer number (7967904363).

Almost surely, 2^31871617446 is an apocalyptic number.

31871617446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31871617446 is a wasteful number, since it uses less digits than its factorization.

31871617446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5311936246.

The product of its digits is 677376, while the sum is 48.

The spelling of 31871617446 in words is "thirty-one billion, eight hundred seventy-one million, six hundred seventeen thousand, four hundred forty-six".