1131040431 has 6 divisors (see below), whose sum is σ = 1633725080. Its totient is φ = 754026948.

The previous prime is 1131040373. The next prime is 1131040441. The reversal of 1131040431 is 1340401311.

It is not a de Polignac number, because 1131040431 - 2¹⁵ = 1131007663 is a prime.

It is a super-2 number, since 2×1131040431² = 2558504913113331522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131040441) 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 5 ways as a sum of consecutive naturals, for example, 62835571 + ... + 62835588.

Almost surely, 2^1131040431 is an apocalyptic number.

1131040431 is a deficient number, since it is larger than the sum of its proper divisors (502684649).

1131040431 is a wasteful number, since it uses less digits than its factorization.

1131040431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125671165 (or 125671162 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1131040431 is about 33630.9445451655. The cubic root of 1131040431 is about 1041.9000125714.

Adding to 1131040431 its reverse (1340401311), we get a palindrome (2471441742).

The spelling of 1131040431 in words is "one billion, one hundred thirty-one million, forty thousand, four hundred thirty-one".