20312053188 has 24 divisors (see below), whose sum is σ = 54165475392. Its totient is φ = 5803443744.

The previous prime is 20312053141. The next prime is 20312053277. The reversal of 20312053188 is 88135021302.

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 7 ways as a sum of consecutive naturals, for example, 120904995 + ... + 120905162.

It is an arithmetic number, because the mean of its divisors is an integer number (2256894808).

Almost surely, 2^20312053188 is an apocalyptic number.

20312053188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20312053188 is an abundant number, since it is smaller than the sum of its proper divisors (33853422204).

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

20312053188 is a wasteful number, since it uses less digits than its factorization.

20312053188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241810171 (or 241810169 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 20312053188 in words is "twenty billion, three hundred twelve million, fifty-three thousand, one hundred eighty-eight".