20312143012 has 24 divisors (see below), whose sum is σ = 40627540800. Its totient is φ = 8704506720.

The previous prime is 20312143003. The next prime is 20312143057. The reversal of 20312143012 is 21034121302.

It is a happy number.

It is a super-3 number, since 3×20312143012³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488187 + ... + 528157.

It is an arithmetic number, because the mean of its divisors is an integer number (1692814200).

Almost surely, 2^20312143012 is an apocalyptic number.

It is an amenable number.

20312143012 is an abundant number, since it is smaller than the sum of its proper divisors (20315397788).

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

20312143012 is a wasteful number, since it uses less digits than its factorization.

20312143012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58131 (or 58129 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20312143012 its reverse (21034121302), we get a palindrome (41346264314).

The spelling of 20312143012 in words is "twenty billion, three hundred twelve million, one hundred forty-three thousand, twelve".