11132431 has 4 divisors (see below), whose sum is σ = 11140000. Its totient is φ = 11124864.

The previous prime is 11132419. The next prime is 11132447. The reversal of 11132431 is 13423111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11132431 - 2²³ = 2743823 is a prime.

It is a super-2 number, since 2×11132431² = 247862039939522, 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 (11132731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786 + ... + 4783.

It is an arithmetic number, because the mean of its divisors is an integer number (2785000).

Almost surely, 2^11132431 is an apocalyptic number.

11132431 is a deficient number, since it is larger than the sum of its proper divisors (7569).

11132431 is an equidigital number, since it uses as much as digits as its factorization.

11132431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568.

The product of its digits is 72, while the sum is 16.

The square root of 11132431 is about 3336.5297840721. The cubic root of 11132431 is about 223.2869478676.

Adding to 11132431 its reverse (13423111), we get a palindrome (24555542).

The spelling of 11132431 in words is "eleven million, one hundred thirty-two thousand, four hundred thirty-one".