11542431 has 4 divisors (see below), whose sum is σ = 15389912. Its totient is φ = 7694952.

The previous prime is 11542423. The next prime is 11542451. The reversal of 11542431 is 13424511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13424511 = 3 ⋅4474837.

It is not a de Polignac number, because 11542431 - 2³ = 11542423 is a prime.

It is a super-2 number, since 2×11542431² = 266455426779522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11542398 and 11542407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11542451) 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, 1923736 + ... + 1923741.

It is an arithmetic number, because the mean of its divisors is an integer number (3847478).

Almost surely, 2^11542431 is an apocalyptic number.

11542431 is a deficient number, since it is larger than the sum of its proper divisors (3847481).

11542431 is an equidigital number, since it uses as much as digits as its factorization.

11542431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847480.

The product of its digits is 480, while the sum is 21.

The square root of 11542431 is about 3397.4153411086. The cubic root of 11542431 is about 225.9951378597.

Adding to 11542431 its reverse (13424511), we get a palindrome (24966942).

The spelling of 11542431 in words is "eleven million, five hundred forty-two thousand, four hundred thirty-one".