2131202120311 has 4 divisors (see below), whose sum is σ = 2324947767624. Its totient is φ = 1937456473000.

The previous prime is 2131202120303. The next prime is 2131202120321. The reversal of 2131202120311 is 1130212021312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2131202120311 - 2³ = 2131202120303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131202120321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96872823640 + ... + 96872823661.

It is an arithmetic number, because the mean of its divisors is an integer number (581236941906).

Almost surely, 2^{2131202120311} is an apocalyptic number.

2131202120311 is a deficient number, since it is larger than the sum of its proper divisors (193745647313).

2131202120311 is a wasteful number, since it uses less digits than its factorization.

2131202120311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193745647312.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2131202120311 its reverse (1130212021312), we get a palindrome (3261414141623).

The spelling of 2131202120311 in words is "two trillion, one hundred thirty-one billion, two hundred two million, one hundred twenty thousand, three hundred eleven".