11307143 has 4 divisors (see below), whose sum is σ = 11492568. Its totient is φ = 11121720.

The previous prime is 11307133. The next prime is 11307169. The reversal of 11307143 is 34170311.

11307143 = T₄₂ + T₄₃ + ... + T₄₀₇.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34170311 = 7 ⋅4881473.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11307143 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 (11307113) 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, 92621 + ... + 92742.

It is an arithmetic number, because the mean of its divisors is an integer number (2873142).

Almost surely, 2^11307143 is an apocalyptic number.

11307143 is a deficient number, since it is larger than the sum of its proper divisors (185425).

11307143 is an equidigital number, since it uses as much as digits as its factorization.

11307143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185424.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 11307143 is about 3362.6095521187. The cubic root of 11307143 is about 224.4489759257.

Adding to 11307143 its reverse (34170311), we get a palindrome (45477454).

The spelling of 11307143 in words is "eleven million, three hundred seven thousand, one hundred forty-three".