20023113312 has 72 divisors (see below), whose sum is σ = 59416431984. Its totient is φ = 6384178944.

The previous prime is 20023113287. The next prime is 20023113329. The reversal of 20023113312 is 21331132002.

20023113312 is a `hidden beast` number, since 20 + 0 + 2 + 311 + 331 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1504783 + ... + 1518030.

It is an arithmetic number, because the mean of its divisors is an integer number (825228222).

Almost surely, 2^20023113312 is an apocalyptic number.

It is an amenable number.

20023113312 is an abundant number, since it is smaller than the sum of its proper divisors (39393318672).

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

20023113312 is a wasteful number, since it uses less digits than its factorization.

20023113312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022852 (or 3022841 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20023113312 its reverse (21331132002), we get a palindrome (41354245314).

The spelling of 20023113312 in words is "twenty billion, twenty-three million, one hundred thirteen thousand, three hundred twelve".