31820005382 has 32 divisors (see below), whose sum is σ = 52379357184. Its totient is φ = 14377716000.

The previous prime is 31820005369. The next prime is 31820005403. The reversal of 31820005382 is 28350002813.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2580632 + ... + 2592932.

It is an arithmetic number, because the mean of its divisors is an integer number (1636854912).

Almost surely, 2^31820005382 is an apocalyptic number.

31820005382 is a deficient number, since it is larger than the sum of its proper divisors (20559351802).

31820005382 is a wasteful number, since it uses less digits than its factorization.

31820005382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13004.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 31820005382 in words is "thirty-one billion, eight hundred twenty million, five thousand, three hundred eighty-two".