131143311 has 12 divisors (see below), whose sum is σ = 204000888. Its totient is φ = 80703504.

The previous prime is 131143291. The next prime is 131143333. The reversal of 131143311 is 113341131.

131143311 is a `hidden beast` number, since 1 + 311 + 43 + 311 = 666.

It is not a de Polignac number, because 131143311 - 2⁵ = 131143279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131143211) 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, 560325 + ... + 560558.

It is an arithmetic number, because the mean of its divisors is an integer number (17000074).

Almost surely, 2^131143311 is an apocalyptic number.

131143311 is a deficient number, since it is larger than the sum of its proper divisors (72857577).

131143311 is a wasteful number, since it uses less digits than its factorization.

131143311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120902 (or 1120899 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 131143311 is about 11451.7820010687. The cubic root of 131143311 is about 508.0604416376.

Adding to 131143311 its reverse (113341131), we get a palindrome (244484442).

The spelling of 131143311 in words is "one hundred thirty-one million, one hundred forty-three thousand, three hundred eleven".