11530431 has 20 divisors (see below), whose sum is σ = 18791784. Its totient is φ = 6987600.

The previous prime is 11530417. The next prime is 11530433. The reversal of 11530431 is 13403511.

It is not a de Polignac number, because 11530431 - 2⁶ = 11530367 is a prime.

It is a super-2 number, since 2×11530431² = 265901678091522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11530433) 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 19 ways as a sum of consecutive naturals, for example, 5580 + ... + 7361.

Almost surely, 2^11530431 is an apocalyptic number.

11530431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11530431 is a deficient number, since it is larger than the sum of its proper divisors (7261353).

11530431 is a wasteful number, since it uses less digits than its factorization.

11530431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12964 (or 12955 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 11530431 is about 3395.6488334338. The cubic root of 11530431 is about 225.9167926650.

Adding to 11530431 its reverse (13403511), we get a palindrome (24933942).

Subtracting 11530431 from its reverse (13403511), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 11530431 in words is "eleven million, five hundred thirty thousand, four hundred thirty-one".