20031312104 has 16 divisors (see below), whose sum is σ = 37586086020. Its totient is φ = 10008355840.

The previous prime is 20031312089. The next prime is 20031312107. The reversal of 20031312104 is 40121313002.

It can be written as a sum of positive squares in 2 ways, for example, as 19440724900 + 590587204 = 139430^2 + 24302^2 .

It is not an unprimeable number, because it can be changed into a prime (20031312107) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 900857 + ... + 922824.

Almost surely, 2^20031312104 is an apocalyptic number.

It is an amenable number.

20031312104 is a deficient number, since it is larger than the sum of its proper divisors (17554773916).

20031312104 is a wasteful number, since it uses less digits than its factorization.

20031312104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825060 (or 1825056 counting only the distinct ones).

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

Adding to 20031312104 its reverse (40121313002), we get a palindrome (60152625106).

The spelling of 20031312104 in words is "twenty billion, thirty-one million, three hundred twelve thousand, one hundred four".