11388271 has 4 divisors (see below), whose sum is σ = 11781000. Its totient is φ = 10995544.

The previous prime is 11388263. The next prime is 11388319. The reversal of 11388271 is 17288311.

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: 17288311 = 107 ⋅161573.

It is a cyclic number.

It is not a de Polignac number, because 11388271 - 2³ = 11388263 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 (11385271) 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, 196321 + ... + 196378.

It is an arithmetic number, because the mean of its divisors is an integer number (2945250).

Almost surely, 2^11388271 is an apocalyptic number.

11388271 is a deficient number, since it is larger than the sum of its proper divisors (392729).

11388271 is an equidigital number, since it uses as much as digits as its factorization.

11388271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392728.

The product of its digits is 2688, while the sum is 31.

The square root of 11388271 is about 3374.6512412396. The cubic root of 11388271 is about 224.9844993437.

It can be divided in two parts, 1138 and 8271, that added together give a square (9409 = 97²).

The spelling of 11388271 in words is "eleven million, three hundred eighty-eight thousand, two hundred seventy-one".