11513143 has 2 divisors, whose sum is σ = 11513144. Its totient is φ = 11513142.

The previous prime is 11513141. The next prime is 11513149. The reversal of 11513143 is 34131511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11513143 - 2¹ = 11513141 is a prime.

Together with 11513141, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11513143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11513141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756571 + 5756572.

It is an arithmetic number, because the mean of its divisors is an integer number (5756572).

Almost surely, 2^11513143 is an apocalyptic number.

11513143 is a deficient number, since it is larger than the sum of its proper divisors (1).

11513143 is an equidigital number, since it uses as much as digits as its factorization.

11513143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 11513143 is about 3393.1022678369. The cubic root of 11513143 is about 225.8038277319.

Adding to 11513143 its reverse (34131511), we get a palindrome (45644654).

The spelling of 11513143 in words is "eleven million, five hundred thirteen thousand, one hundred forty-three".