1115513143 has 8 divisors (see below), whose sum is σ = 1122778800. Its totient is φ = 1108259328.

The previous prime is 1115513137. The next prime is 1115513167. The reversal of 1115513143 is 3413155111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115513143 - 2⁹ = 1115512631 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 (1115513183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257943 + ... + 262231.

It is an arithmetic number, because the mean of its divisors is an integer number (140347350).

Almost surely, 2^1115513143 is an apocalyptic number.

1115513143 is a deficient number, since it is larger than the sum of its proper divisors (7265657).

1115513143 is a wasteful number, since it uses less digits than its factorization.

1115513143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5921.

The product of its digits is 900, while the sum is 25.

The square root of 1115513143 is about 33399.2985405382. The cubic root of 1115513143 is about 1037.1101799266.

Adding to 1115513143 its reverse (3413155111), we get a palindrome (4528668254).

The spelling of 1115513143 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, one hundred forty-three".