31820840204 has 12 divisors (see below), whose sum is σ = 55745280024. Its totient is φ = 15893617344.

The previous prime is 31820840201. The next prime is 31820840209. The reversal of 31820840204 is 40204802813.

It is not an unprimeable number, because it can be changed into a prime (31820840201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4196429 + ... + 4204004.

It is an arithmetic number, because the mean of its divisors is an integer number (4645440002).

Almost surely, 2^31820840204 is an apocalyptic number.

It is an amenable number.

31820840204 is a deficient number, since it is larger than the sum of its proper divisors (23924439820).

31820840204 is a wasteful number, since it uses less digits than its factorization.

31820840204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8401384 (or 8401382 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 31820840204 in words is "thirty-one billion, eight hundred twenty million, eight hundred forty thousand, two hundred four".