11272431 has 8 divisors (see below), whose sum is σ = 15220480. Its totient is φ = 7419672.

The previous prime is 11272421. The next prime is 11272447. The reversal of 11272431 is 13427211.

11272431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11272431 - 2⁵ = 11272399 is a prime.

It is a super-2 number, since 2×11272431² = 254135401299522, 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 = 11272398 and 11272407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11272421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23545 + ... + 24018.

It is an arithmetic number, because the mean of its divisors is an integer number (1902560).

Almost surely, 2^11272431 is an apocalyptic number.

11272431 is a deficient number, since it is larger than the sum of its proper divisors (3948049).

11272431 is an equidigital number, since it uses as much as digits as its factorization.

11272431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47645.

The product of its digits is 336, while the sum is 21.

The square root of 11272431 is about 3357.4441171820. Note that the first 3 decimals coincide. The cubic root of 11272431 is about 224.2190605195.

Adding to 11272431 its reverse (13427211), we get a palindrome (24699642).

The spelling of 11272431 in words is "eleven million, two hundred seventy-two thousand, four hundred thirty-one".