2113402031312 has 80 divisors (see below), whose sum is σ = 4818774203712. Its totient is φ = 885230914560.

The previous prime is 2113402031311. The next prime is 2113402031317. The reversal of 2113402031312 is 2131302043112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113402031311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556268 + ... + 2129844.

Almost surely, 2^{2113402031312} is an apocalyptic number.

2113402031312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113402031312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2409387101856).

2113402031312 is an abundant number, since it is smaller than the sum of its proper divisors (2705372172400).

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

2113402031312 is a wasteful number, since it uses less digits than its factorization.

2113402031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574196 (or 1574190 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2113402031312 its reverse (2131302043112), we get a palindrome (4244704074424).

The spelling of 2113402031312 in words is "two trillion, one hundred thirteen billion, four hundred two million, thirty-one thousand, three hundred twelve".