20020243312 has 10 divisors (see below), whose sum is σ = 38789221448. Its totient is φ = 10010121648.

The previous prime is 20020243291. The next prime is 20020243337. The reversal of 20020243312 is 21334202002.

It is a self number, because there is not a number n which added to its sum of digits gives 20020243312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625632588 + ... + 625632619.

Almost surely, 2^20020243312 is an apocalyptic number.

It is an amenable number.

20020243312 is a deficient number, since it is larger than the sum of its proper divisors (18768978136).

20020243312 is a wasteful number, since it uses less digits than its factorization.

20020243312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251265215 (or 1251265209 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20020243312 its reverse (21334202002), we get a palindrome (41354445314).

The spelling of 20020243312 in words is "twenty billion, twenty million, two hundred forty-three thousand, three hundred twelve".