20112313131023 has 16 divisors (see below), whose sum is σ = 21026411510976. Its totient is φ = 19201552719360.

The previous prime is 20112313130989. The next prime is 20112313131041. The reversal of 20112313131023 is 32013131321102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112313131023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20112313131023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112313131083) 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 15 ways as a sum of consecutive naturals, for example, 25869911 + ... + 26636007.

It is an arithmetic number, because the mean of its divisors is an integer number (1314150719436).

Almost surely, 2^{20112313131023} is an apocalyptic number.

20112313131023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20112313131023 is a deficient number, since it is larger than the sum of its proper divisors (914098379953).

20112313131023 is a wasteful number, since it uses less digits than its factorization.

20112313131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768274.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 20112313131023 its reverse (32013131321102), we get a palindrome (52125444452125).

The spelling of 20112313131023 in words is "twenty trillion, one hundred twelve billion, three hundred thirteen million, one hundred thirty-one thousand, twenty-three".