20103131231243 has 8 divisors (see below), whose sum is σ = 20796471295200. Its totient is φ = 19409799743488.

The previous prime is 20103131231087. The next prime is 20103131231269. The reversal of 20103131231243 is 34213213130102.

It is a happy number.

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 20103131231243 - 2³⁶ = 20034411754507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20103131234243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2819723 + ... + 6939531.

It is an arithmetic number, because the mean of its divisors is an integer number (2599558911900).

Almost surely, 2^{20103131231243} is an apocalyptic number.

20103131231243 is a deficient number, since it is larger than the sum of its proper divisors (693340063957).

20103131231243 is a wasteful number, since it uses less digits than its factorization.

20103131231243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288101.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20103131231243 its reverse (34213213130102), we get a palindrome (54316344361345).

The spelling of 20103131231243 in words is "twenty trillion, one hundred three billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred forty-three".