11523843 has 16 divisors (see below), whose sum is σ = 17396640. Its totient is φ = 7536672.

The previous prime is 11523839. The next prime is 11523857. The reversal of 11523843 is 34832511.

It is a happy number.

It is not a de Polignac number, because 11523843 - 2² = 11523839 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11523833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2596 + ... + 5457.

It is an arithmetic number, because the mean of its divisors is an integer number (1087290).

Almost surely, 2^11523843 is an apocalyptic number.

11523843 is a deficient number, since it is larger than the sum of its proper divisors (5872797).

11523843 is an equidigital number, since it uses as much as digits as its factorization.

11523843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8115 (or 8109 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 11523843 is about 3394.6786298559. The cubic root of 11523843 is about 225.8737580384.

The spelling of 11523843 in words is "eleven million, five hundred twenty-three thousand, eight hundred forty-three".