11403143 has 4 divisors (see below), whose sum is σ = 11485320. Its totient is φ = 11320968.

The previous prime is 11403137. The next prime is 11403149. The reversal of 11403143 is 34130411.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11403137) and next prime (11403149).

It is a cyclic number.

It is not a de Polignac number, because 11403143 - 2¹⁰ = 11402119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40880 + ... + 41157.

It is an arithmetic number, because the mean of its divisors is an integer number (2871330).

Almost surely, 2^11403143 is an apocalyptic number.

11403143 is a deficient number, since it is larger than the sum of its proper divisors (82177).

11403143 is an equidigital number, since it uses as much as digits as its factorization.

11403143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82176.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 11403143 is about 3376.8540092814. The cubic root of 11403143 is about 225.0823928701.

Adding to 11403143 its reverse (34130411), we get a palindrome (45533554).

The spelling of 11403143 in words is "eleven million, four hundred three thousand, one hundred forty-three".