12403011 has 4 divisors (see below), whose sum is σ = 16537352. Its totient is φ = 8268672.

The previous prime is 12403009. The next prime is 12403019. The reversal of 12403011 is 11030421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12403011 - 2¹ = 12403009 is a prime.

It is a super-2 number, since 2×12403011² = 307669363732242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12403019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2067166 + ... + 2067171.

It is an arithmetic number, because the mean of its divisors is an integer number (4134338).

Almost surely, 2^12403011 is an apocalyptic number.

12403011 is a deficient number, since it is larger than the sum of its proper divisors (4134341).

12403011 is an equidigital number, since it uses as much as digits as its factorization.

12403011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134340.

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

The square root of 12403011 is about 3521.7908796520. The cubic root of 12403011 is about 231.4776384193.

Adding to 12403011 its reverse (11030421), we get a palindrome (23433432).

The spelling of 12403011 in words is "twelve million, four hundred three thousand, eleven".