1111431141 has 12 divisors (see below), whose sum is σ = 1621952332. Its totient is φ = 733314816.

The previous prime is 1111431131. The next prime is 1111431161. The reversal of 1111431141 is 1411341111.

It can be written as a sum of positive squares in 2 ways, for example, as 165868641 + 945562500 = 12879^2 + 30750^2 .

It is not a de Polignac number, because 1111431141 - 2⁵ = 1111431109 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 (1111431131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 635686 + ... + 637431.

Almost surely, 2^1111431141 is an apocalyptic number.

It is an amenable number.

1111431141 is a deficient number, since it is larger than the sum of its proper divisors (510521191).

1111431141 is a wasteful number, since it uses less digits than its factorization.

1111431141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273220 (or 1273217 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 1111431141 is about 33338.1334360519. The cubic root of 1111431141 is about 1035.8435998330.

Adding to 1111431141 its reverse (1411341111), we get a palindrome (2522772252).

The spelling of 1111431141 in words is "one billion, one hundred eleven million, four hundred thirty-one thousand, one hundred forty-one".