4131231111 has 36 divisors (see below), whose sum is σ = 7036737552. Its totient is φ = 2328346944.

The previous prime is 4131231107. The next prime is 4131231131. The reversal of 4131231111 is 1111321314.

It is a happy number.

4131231111 is a `hidden beast` number, since 41 + 312 + 311 + 1 + 1 = 666.

It is not a de Polignac number, because 4131231111 - 2² = 4131231107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4131231131) 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 35 ways as a sum of consecutive naturals, for example, 31971 + ... + 96356.

It is an arithmetic number, because the mean of its divisors is an integer number (195464932).

Almost surely, 2^4131231111 is an apocalyptic number.

4131231111 is a deficient number, since it is larger than the sum of its proper divisors (2905506441).

4131231111 is a wasteful number, since it uses less digits than its factorization.

4131231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128420 (or 128410 counting only the distinct ones).

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

The square root of 4131231111 is about 64274.6537213543. The cubic root of 4131231111 is about 1604.5742941776.

Adding to 4131231111 its reverse (1111321314), we get a palindrome (5242552425).

The spelling of 4131231111 in words is "four billion, one hundred thirty-one million, two hundred thirty-one thousand, one hundred eleven".