11144431 has 6 divisors (see below), whose sum is σ = 11762232. Its totient is φ = 10557540.

The previous prime is 11144429. The next prime is 11144447. The reversal of 11144431 is 13444111.

It is not a de Polignac number, because 11144431 - 2¹ = 11144429 is a prime.

It is a super-2 number, since 2×11144431² = 248396684627522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11144399 and 11144408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11144131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15075 + ... + 15796.

It is an arithmetic number, because the mean of its divisors is an integer number (1960372).

Almost surely, 2^11144431 is an apocalyptic number.

11144431 is a deficient number, since it is larger than the sum of its proper divisors (617801).

11144431 is an equidigital number, since it uses as much as digits as its factorization.

11144431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30909 (or 30890 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 11144431 is about 3338.3275752987. The cubic root of 11144431 is about 223.3671484156.

Adding to 11144431 its reverse (13444111), we get a palindrome (24588542).

The spelling of 11144431 in words is "eleven million, one hundred forty-four thousand, four hundred thirty-one".