2131320111 has 8 divisors (see below), whose sum is σ = 2895378480. Its totient is φ = 1394070912.

The previous prime is 2131320077. The next prime is 2131320119. The reversal of 2131320111 is 1110231312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2131320111 - 2²² = 2127125807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131320119) 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 7 ways as a sum of consecutive naturals, for example, 6702106 + ... + 6702423.

It is an arithmetic number, because the mean of its divisors is an integer number (361922310).

Almost surely, 2^2131320111 is an apocalyptic number.

2131320111 is a deficient number, since it is larger than the sum of its proper divisors (764058369).

2131320111 is a wasteful number, since it uses less digits than its factorization.

2131320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13404585.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2131320111 is about 46166.2226200065. Note that the first 3 decimals coincide. The cubic root of 2131320111 is about 1286.9141051932.

Adding to 2131320111 its reverse (1110231312), we get a palindrome (3241551423).

The spelling of 2131320111 in words is "two billion, one hundred thirty-one million, three hundred twenty thousand, one hundred eleven".