20031212312 has 16 divisors (see below), whose sum is σ = 37565778840. Its totient is φ = 10013671296.

The previous prime is 20031212303. The next prime is 20031212323. The reversal of 20031212312 is 21321213002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197378 + ... + 281105.

Almost surely, 2^20031212312 is an apocalyptic number.

It is an amenable number.

20031212312 is a deficient number, since it is larger than the sum of its proper divisors (17534566528).

20031212312 is a wasteful number, since it uses less digits than its factorization.

20031212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483722 (or 483718 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20031212312 its reverse (21321213002), we get a palindrome (41352425314).

The spelling of 20031212312 in words is "twenty billion, thirty-one million, two hundred twelve thousand, three hundred twelve".