20031312122 has 8 divisors (see below), whose sum is σ = 31353358176. Its totient is φ = 9580192732.

The previous prime is 20031312121. The next prime is 20031312131. The reversal of 20031312122 is 22121313002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20031312122.

It is not an unprimeable number, because it can be changed into a prime (20031312121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217731608 + ... + 217731699.

It is an arithmetic number, because the mean of its divisors is an integer number (3919169772).

Almost surely, 2^20031312122 is an apocalyptic number.

20031312122 is a deficient number, since it is larger than the sum of its proper divisors (11322046054).

20031312122 is a wasteful number, since it uses less digits than its factorization.

20031312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435463332.

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

Adding to 20031312122 its reverse (22121313002), we get a palindrome (42152625124).

The spelling of 20031312122 in words is "twenty billion, thirty-one million, three hundred twelve thousand, one hundred twenty-two".