2131241111 has 4 divisors (see below), whose sum is σ = 2223903792. Its totient is φ = 2038578432.

The previous prime is 2131241089. The next prime is 2131241113. The reversal of 2131241111 is 1111421312.

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 2131241111 - 2²² = 2127046807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131241111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131241113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46331306 + ... + 46331351.

It is an arithmetic number, because the mean of its divisors is an integer number (555975948).

Almost surely, 2^2131241111 is an apocalyptic number.

2131241111 is a deficient number, since it is larger than the sum of its proper divisors (92662681).

2131241111 is an equidigital number, since it uses as much as digits as its factorization.

2131241111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92662680.

The product of its digits is 48, while the sum is 17.

The square root of 2131241111 is about 46165.3670081805. The cubic root of 2131241111 is about 1286.8982046457.

Adding to 2131241111 its reverse (1111421312), we get a palindrome (3242662423).

The spelling of 2131241111 in words is "two billion, one hundred thirty-one million, two hundred forty-one thousand, one hundred eleven".