2131440343411 has 4 divisors (see below), whose sum is σ = 2131479316512. Its totient is φ = 2131401370312.

The previous prime is 2131440343349. The next prime is 2131440343421. The reversal of 2131440343411 is 1143430441312.

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 2131440343411 - 2¹¹ = 2131440341363 is a prime.

It is a super-2 number, since 2×2131440343411² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131440343421) 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, 19404400 + ... + 19513933.

It is an arithmetic number, because the mean of its divisors is an integer number (532869829128).

Almost surely, 2^{2131440343411} is an apocalyptic number.

2131440343411 is a deficient number, since it is larger than the sum of its proper divisors (38973101).

2131440343411 is an equidigital number, since it uses as much as digits as its factorization.

2131440343411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38973100.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 2131440343411 its reverse (1143430441312), we get a palindrome (3274870784723).

The spelling of 2131440343411 in words is "two trillion, one hundred thirty-one billion, four hundred forty million, three hundred forty-three thousand, four hundred eleven".