11423147 has 4 divisors (see below), whose sum is σ = 11431680. Its totient is φ = 11414616.

The previous prime is 11423131. The next prime is 11423149. The reversal of 11423147 is 74132411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11423147 - 2⁴ = 11423131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11423149) 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, 1772 + ... + 5097.

It is an arithmetic number, because the mean of its divisors is an integer number (2857920).

Almost surely, 2^11423147 is an apocalyptic number.

11423147 is a deficient number, since it is larger than the sum of its proper divisors (8533).

11423147 is an equidigital number, since it uses as much as digits as its factorization.

11423147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532.

The product of its digits is 672, while the sum is 23.

The square root of 11423147 is about 3379.8146398878. The cubic root of 11423147 is about 225.2139331504.

Adding to 11423147 its reverse (74132411), we get a palindrome (85555558).

The spelling of 11423147 in words is "eleven million, four hundred twenty-three thousand, one hundred forty-seven".