20031020313121 has 8 divisors (see below), whose sum is σ = 20055771546624. Its totient is φ = 20006270081760.

The previous prime is 20031020313103. The next prime is 20031020313127. The reversal of 20031020313121 is 12131302013002.

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

It is a cyclic number.

It is not a de Polignac number, because 20031020313121 - 2²⁷ = 20030886095393 is a prime.

It is a super-2 number, since 2×20031020313121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20031020313127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44726976 + ... + 45172606.

It is an arithmetic number, because the mean of its divisors is an integer number (2506971443328).

Almost surely, 2^{20031020313121} is an apocalyptic number.

It is an amenable number.

20031020313121 is a deficient number, since it is larger than the sum of its proper divisors (24751233503).

20031020313121 is an equidigital number, since it uses as much as digits as its factorization.

20031020313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501071.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20031020313121 its reverse (12131302013002), we get a palindrome (32162322326123).

The spelling of 20031020313121 in words is "twenty trillion, thirty-one billion, twenty million, three hundred thirteen thousand, one hundred twenty-one".