2131143111 has 12 divisors (see below), whose sum is σ = 3080050480. Its totient is φ = 1419962400.

The previous prime is 2131143107. The next prime is 2131143149. The reversal of 2131143111 is 1113411312.

It is a happy number.

2131143111 is a `hidden beast` number, since 213 + 11 + 431 + 11 = 666.

2131143111 is nontrivially palindromic in base 11.

It is not a de Polignac number, because 2131143111 - 2² = 2131143107 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 (2131143101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49531 + ... + 81948.

Almost surely, 2^2131143111 is an apocalyptic number.

2131143111 is a deficient number, since it is larger than the sum of its proper divisors (948907369).

2131143111 is a wasteful number, since it uses less digits than its factorization.

2131143111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133286 (or 133283 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 2131143111 is about 46164.3055942576. The cubic root of 2131143111 is about 1286.8784793697.

Adding to 2131143111 its reverse (1113411312), we get a palindrome (3244554423).

It can be divided in two parts, 213114 and 3111, that added together give a square (216225 = 465²).

The spelling of 2131143111 in words is "two billion, one hundred thirty-one million, one hundred forty-three thousand, one hundred eleven".