2131311234112 has 56 divisors (see below), whose sum is σ = 4337103670200. Its totient is φ = 1038553251840.

The previous prime is 2131311234097. The next prime is 2131311234121. The reversal of 2131311234112 is 2114321131312.

It can be written as a sum of positive squares in 4 ways, for example, as 11095672896 + 2120215561216 = 105336^2 + 1456096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2025264 + ... + 2892112.

It is an arithmetic number, because the mean of its divisors is an integer number (77448279825).

Almost surely, 2^{2131311234112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131311234112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2168551835100).

2131311234112 is an abundant number, since it is smaller than the sum of its proper divisors (2205792436088).

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

2131311234112 is an equidigital number, since it uses as much as digits as its factorization.

2131311234112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867839 (or 867829 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 2131311234112 its reverse (2114321131312), we get a palindrome (4245632365424).

The spelling of 2131311234112 in words is "two trillion, one hundred thirty-one billion, three hundred eleven million, two hundred thirty-four thousand, one hundred twelve".