12011403 has 8 divisors (see below), whose sum is σ = 16036048. Its totient is φ = 7997184.

The previous prime is 12011393. The next prime is 12011411. The reversal of 12011403 is 30411021.

It is a happy number.

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

It is not a de Polignac number, because 12011403 - 2⁴ = 12011387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011203) 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, 675 + ... + 4947.

It is an arithmetic number, because the mean of its divisors is an integer number (2004506).

Almost surely, 2^12011403 is an apocalyptic number.

12011403 is a deficient number, since it is larger than the sum of its proper divisors (4024645).

12011403 is an equidigital number, since it uses as much as digits as its factorization.

12011403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5213.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12011403 is about 3465.7471056036. The cubic root of 12011403 is about 229.0153432001.

Adding to 12011403 its reverse (30411021), we get a palindrome (42422424).

The spelling of 12011403 in words is "twelve million, eleven thousand, four hundred three".