31641312272 has 20 divisors (see below), whose sum is σ = 61436331216. Its totient is φ = 15786775200.

The previous prime is 31641312251. The next prime is 31641312281. The reversal of 31641312272 is 27221314613.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2109854 + ... + 2124797.

Almost surely, 2^31641312272 is an apocalyptic number.

It is an amenable number.

31641312272 is a deficient number, since it is larger than the sum of its proper divisors (29795018944).

31641312272 is a wasteful number, since it uses less digits than its factorization.

31641312272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235126 (or 4235120 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

Adding to 31641312272 its reverse (27221314613), we get a palindrome (58862626885).

The spelling of 31641312272 in words is "thirty-one billion, six hundred forty-one million, three hundred twelve thousand, two hundred seventy-two".