11172423 has 8 divisors (see below), whose sum is σ = 15028848. Its totient is φ = 7382144.

The previous prime is 11172419. The next prime is 11172443. The reversal of 11172423 is 32427111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11172423 - 2² = 11172419 is a prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11172423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11172443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16140 + ... + 16817.

It is an arithmetic number, because the mean of its divisors is an integer number (1878606).

Almost surely, 2^11172423 is an apocalyptic number.

11172423 is a deficient number, since it is larger than the sum of its proper divisors (3856425).

11172423 is a wasteful number, since it uses less digits than its factorization.

11172423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33073.

The product of its digits is 336, while the sum is 21.

The square root of 11172423 is about 3342.5174644271. The cubic root of 11172423 is about 223.5540060373.

Adding to 11172423 its reverse (32427111), we get a palindrome (43599534).

It can be divided in two parts, 111724 and 23, that multiplied together give a palindrome (2569652).

The spelling of 11172423 in words is "eleven million, one hundred seventy-two thousand, four hundred twenty-three".