2131111123302 has 256 divisors, whose sum is σ = 5089066278912. Its totient is φ = 582532853760.

The previous prime is 2131111123283. The next prime is 2131111123319. The reversal of 2131111123302 is 2033211111312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 3826052008 + ... + 3826052564.

It is an arithmetic number, because the mean of its divisors is an integer number (19879165152).

Almost surely, 2^{2131111123302} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131111123302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2544533139456).

2131111123302 is an abundant number, since it is smaller than the sum of its proper divisors (2957955155610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131111123302 is a wasteful number, since it uses less digits than its factorization.

2131111123302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 2131111123302 its reverse (2033211111312), we get a palindrome (4164322234614).

The spelling of 2131111123302 in words is "two trillion, one hundred thirty-one billion, one hundred eleven million, one hundred twenty-three thousand, three hundred two".