1115403143 has 2 divisors, whose sum is σ = 1115403144. Its totient is φ = 1115403142.

The previous prime is 1115403119. The next prime is 1115403199. The reversal of 1115403143 is 3413045111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1115403143 - 2¹⁶ = 1115337607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115403743) 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 as a sum of consecutive naturals, namely, 557701571 + 557701572.

It is an arithmetic number, because the mean of its divisors is an integer number (557701572).

Almost surely, 2^1115403143 is an apocalyptic number.

1115403143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115403143 is an equidigital number, since it uses as much as digits as its factorization.

1115403143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1115403143 is about 33397.6517587689. The cubic root of 1115403143 is about 1037.0760892271.

Adding to 1115403143 its reverse (3413045111), we get a palindrome (4528448254).

The spelling of 1115403143 in words is "one billion, one hundred fifteen million, four hundred three thousand, one hundred forty-three".