31882213993 has 8 divisors (see below), whose sum is σ = 36443512512. Its totient is φ = 27322589616.

The previous prime is 31882213963. The next prime is 31882214017. The reversal of 31882213993 is 39931228813.

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

It is not a de Polignac number, because 31882213993 - 2²¹ = 31880116841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31882213963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377455 + ... + 454132.

It is an arithmetic number, because the mean of its divisors is an integer number (4555439064).

Almost surely, 2^31882213993 is an apocalyptic number.

It is an amenable number.

31882213993 is a deficient number, since it is larger than the sum of its proper divisors (4561298519).

31882213993 is an equidigital number, since it uses as much as digits as its factorization.

31882213993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837071.

The product of its digits is 559872, while the sum is 49.

The spelling of 31882213993 in words is "thirty-one billion, eight hundred eighty-two million, two hundred thirteen thousand, nine hundred ninety-three".