20312037218 has 8 divisors (see below), whose sum is σ = 33237879120. Its totient is φ = 9232744180.

The previous prime is 20312037209. The next prime is 20312037271. The reversal of 20312037218 is 81273021302.

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

It is an unprimeable number.

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, 461637188 + ... + 461637231.

It is an arithmetic number, because the mean of its divisors is an integer number (4154734890).

Almost surely, 2^20312037218 is an apocalyptic number.

20312037218 is a deficient number, since it is larger than the sum of its proper divisors (12925841902).

20312037218 is a wasteful number, since it uses less digits than its factorization.

20312037218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923274432.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 20312037218 in words is "twenty billion, three hundred twelve million, thirty-seven thousand, two hundred eighteen".