20031286388 has 24 divisors (see below), whose sum is σ = 37463694912. Its totient is φ = 9338386304.

The previous prime is 20031286361. The next prime is 20031286397. The reversal of 20031286388 is 88368213002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1369256 + ... + 1383807.

It is an arithmetic number, because the mean of its divisors is an integer number (1560987288).

Almost surely, 2^20031286388 is an apocalyptic number.

It is an amenable number.

20031286388 is a deficient number, since it is larger than the sum of its proper divisors (17432408524).

20031286388 is a wasteful number, since it uses less digits than its factorization.

20031286388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753191 (or 2753189 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 20031286388 in words is "twenty billion, thirty-one million, two hundred eighty-six thousand, three hundred eighty-eight".