11530403 has 8 divisors (see below), whose sum is σ = 12409920. Its totient is φ = 10673280.

The previous prime is 11530391. The next prime is 11530417. The reversal of 11530403 is 30403511.

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

It is not a de Polignac number, because 11530403 - 2⁶ = 11530339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11530433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4523 + ... + 6596.

It is an arithmetic number, because the mean of its divisors is an integer number (1551240).

Almost surely, 2^11530403 is an apocalyptic number.

11530403 is a deficient number, since it is larger than the sum of its proper divisors (879517).

11530403 is a wasteful number, since it uses less digits than its factorization.

11530403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11197.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 11530403 is about 3395.6447105079. The cubic root of 11530403 is about 225.9166097960.

Adding to 11530403 its reverse (30403511), we get a palindrome (41933914).

The spelling of 11530403 in words is "eleven million, five hundred thirty thousand, four hundred three".