11543197 has 4 divisors (see below), whose sum is σ = 11550816. Its totient is φ = 11535580.

The previous prime is 11543167. The next prime is 11543227. The reversal of 11543197 is 79134511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (11543167) and next prime (11543227).

It is a cyclic number.

It is not a de Polignac number, because 11543197 - 2⁷ = 11543069 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543167) 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, 679 + ... + 4852.

It is an arithmetic number, because the mean of its divisors is an integer number (2887704).

Almost surely, 2^11543197 is an apocalyptic number.

It is an amenable number.

11543197 is a deficient number, since it is larger than the sum of its proper divisors (7619).

11543197 is an equidigital number, since it uses as much as digits as its factorization.

11543197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7618.

The product of its digits is 3780, while the sum is 31.

The square root of 11543197 is about 3397.5280719959. The cubic root of 11543197 is about 226.0001370506. Note that the first 3 decimals are identical.

The spelling of 11543197 in words is "eleven million, five hundred forty-three thousand, one hundred ninety-seven".