11146431 has 4 divisors (see below), whose sum is σ = 14861912. Its totient is φ = 7430952.

The previous prime is 11146403. The next prime is 11146439. The reversal of 11146431 is 13464111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13464111 = 3 ⋅4488037.

It is not a de Polignac number, because 11146431 - 2¹¹ = 11144383 is a prime.

It is a super-2 number, since 2×11146431² = 248485848075522, 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 = 11146398 and 11146407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11146439) 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 3 ways as a sum of consecutive naturals, for example, 1857736 + ... + 1857741.

It is an arithmetic number, because the mean of its divisors is an integer number (3715478).

Almost surely, 2^11146431 is an apocalyptic number.

11146431 is a deficient number, since it is larger than the sum of its proper divisors (3715481).

11146431 is an equidigital number, since it uses as much as digits as its factorization.

11146431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715480.

The product of its digits is 288, while the sum is 21.

The square root of 11146431 is about 3338.6271130511. The cubic root of 11146431 is about 223.3805095755.

The spelling of 11146431 in words is "eleven million, one hundred forty-six thousand, four hundred thirty-one".