31398986326 has 8 divisors (see below), whose sum is σ = 47160372024. Its totient is φ = 15678862320.

The previous prime is 31398986323. The next prime is 31398986347. The reversal of 31398986326 is 62368989313.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31398986321) 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 3 ways as a sum of consecutive naturals, for example, 10313520 + ... + 10316563.

It is an arithmetic number, because the mean of its divisors is an integer number (5895046503).

Almost surely, 2^31398986326 is an apocalyptic number.

31398986326 is a deficient number, since it is larger than the sum of its proper divisors (15761385698).

31398986326 is a wasteful number, since it uses less digits than its factorization.

31398986326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20630846.

The product of its digits is 10077696, while the sum is 58.

The spelling of 31398986326 in words is "thirty-one billion, three hundred ninety-eight million, nine hundred eighty-six thousand, three hundred twenty-six".