31820678682 has 16 divisors (see below), whose sum is σ = 68536846560. Its totient is φ = 9790978032.

The previous prime is 31820678677. The next prime is 31820678689. The reversal of 31820678682 is 28687602813.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31820678689) 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, 203978632 + ... + 203978787.

It is an arithmetic number, because the mean of its divisors is an integer number (4283552910).

Almost surely, 2^31820678682 is an apocalyptic number.

31820678682 is an abundant number, since it is smaller than the sum of its proper divisors (36716167878).

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

31820678682 is a wasteful number, since it uses less digits than its factorization.

31820678682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407957437.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 31820678682 in words is "thirty-one billion, eight hundred twenty million, six hundred seventy-eight thousand, six hundred eighty-two".