2131100002305 has 128 divisors (see below), whose sum is σ = 4042103938560. Its totient is φ = 1061580349440.

The previous prime is 2131100002303. The next prime is 2131100002379. The reversal of 2131100002305 is 5032000011312.

It is not a de Polignac number, because 2131100002305 - 2¹ = 2131100002303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2131100002303) 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 127 ways as a sum of consecutive naturals, for example, 326802445 + ... + 326808965.

It is an arithmetic number, because the mean of its divisors is an integer number (31578937020).

Almost surely, 2^{2131100002305} is an apocalyptic number.

It is an amenable number.

2131100002305 is a deficient number, since it is larger than the sum of its proper divisors (1911003936255).

2131100002305 is a wasteful number, since it uses less digits than its factorization.

2131100002305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616 (or 7610 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 2131100002305 its reverse (5032000011312), we get a palindrome (7163100013617).

The spelling of 2131100002305 in words is "two trillion, one hundred thirty-one billion, one hundred million, two thousand, three hundred five".