20031200321312 has 24 divisors (see below), whose sum is σ = 39436944808716. Its totient is φ = 10015468306432.

The previous prime is 20031200321311. The next prime is 20031200321329. The reversal of 20031200321312 is 21312300213002.

It can be written as a sum of positive squares in 2 ways, for example, as 17779411966096 + 2251788355216 = 4216564^2 + 1500596^2 .

It is not an unprimeable number, because it can be changed into a prime (20031200321311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628573 + ... + 6535644.

Almost surely, 2^{20031200321312} is an apocalyptic number.

It is an amenable number.

20031200321312 is a deficient number, since it is larger than the sum of its proper divisors (19405744487404).

20031200321312 is an equidigital number, since it uses as much as digits as its factorization.

20031200321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8240900 (or 8240892 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20031200321312 its reverse (21312300213002), we get a palindrome (41343500534314).

The spelling of 20031200321312 in words is "twenty trillion, thirty-one billion, two hundred million, three hundred twenty-one thousand, three hundred twelve".