20200321312 has 24 divisors (see below), whose sum is σ = 39856434156. Its totient is φ = 10078052352.

The previous prime is 20200321307. The next prime is 20200321313. The reversal of 20200321312 is 21312300202.

It can be written as a sum of positive squares in 2 ways, for example, as 20199231376 + 1089936 = 142124^2 + 1044^2 .

It is a super-2 number, since 2×20200321312² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20200321313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676033 + ... + 705280.

Almost surely, 2^20200321312 is an apocalyptic number.

It is an amenable number.

20200321312 is a deficient number, since it is larger than the sum of its proper divisors (19656112844).

20200321312 is a wasteful number, since it uses less digits than its factorization.

20200321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381780 (or 1381772 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20200321312 its reverse (21312300202), we get a palindrome (41512621514).

The spelling of 20200321312 in words is "twenty billion, two hundred million, three hundred twenty-one thousand, three hundred twelve".