20113111103231 has 8 divisors (see below), whose sum is σ = 21296453904000. Its totient is φ = 18929792593408.

The previous prime is 20113111103221. The next prime is 20113111103257. The reversal of 20113111103231 is 13230111131102.

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 20113111103231 - 2⁶ = 20113111103167 is a prime.

It is a super-2 number, since 2×20113111103231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113111103221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4354106 + ... + 7693143.

It is an arithmetic number, because the mean of its divisors is an integer number (2662056738000).

Almost surely, 2^{20113111103231} is an apocalyptic number.

20113111103231 is a deficient number, since it is larger than the sum of its proper divisors (1183342800769).

20113111103231 is a wasteful number, since it uses less digits than its factorization.

20113111103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12145473.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 20113111103231 its reverse (13230111131102), we get a palindrome (33343222234333).

The spelling of 20113111103231 in words is "twenty trillion, one hundred thirteen billion, one hundred eleven million, one hundred three thousand, two hundred thirty-one".