20003123312 has 10 divisors (see below), whose sum is σ = 38756051448. Its totient is φ = 10001561648.

The previous prime is 20003123311. The next prime is 20003123323. The reversal of 20003123312 is 21332130002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003123311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625097588 + ... + 625097619.

Almost surely, 2^20003123312 is an apocalyptic number.

It is an amenable number.

20003123312 is a deficient number, since it is larger than the sum of its proper divisors (18752928136).

20003123312 is a wasteful number, since it uses less digits than its factorization.

20003123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250195215 (or 1250195209 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20003123312 its reverse (21332130002), we get a palindrome (41335253314).

The spelling of 20003123312 in words is "twenty billion, three million, one hundred twenty-three thousand, three hundred twelve".