1111403143 has 4 divisors (see below), whose sum is σ = 1113045480. Its totient is φ = 1109760808.

The previous prime is 1111403141. The next prime is 1111403197. The reversal of 1111403143 is 3413041111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3413041111 = 661 ⋅5163451.

It is a cyclic number.

It is not a de Polignac number, because 1111403143 - 2¹ = 1111403141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111403143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111403141) 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, 820153 + ... + 821506.

It is an arithmetic number, because the mean of its divisors is an integer number (278261370).

Almost surely, 2^1111403143 is an apocalyptic number.

1111403143 is a deficient number, since it is larger than the sum of its proper divisors (1642337).

1111403143 is an equidigital number, since it uses as much as digits as its factorization.

1111403143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642336.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1111403143 is about 33337.7135238756. The cubic root of 1111403143 is about 1035.8349018005.

Adding to 1111403143 its reverse (3413041111), we get a palindrome (4524444254).

The spelling of 1111403143 in words is "one billion, one hundred eleven million, four hundred three thousand, one hundred forty-three".