12403811 has 12 divisors (see below), whose sum is σ = 14526792. Its totient is φ = 10559808.

The previous prime is 12403763. The next prime is 12403837. The reversal of 12403811 is 11830421.

12403811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12403811 - 2¹⁸ = 12141667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12403871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7211 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (1210566).

Almost surely, 2^12403811 is an apocalyptic number.

12403811 is a deficient number, since it is larger than the sum of its proper divisors (2122981).

12403811 is a wasteful number, since it uses less digits than its factorization.

12403811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 1723 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12403811 is about 3521.9044563986. The cubic root of 12403811 is about 231.4826151176.

The spelling of 12403811 in words is "twelve million, four hundred three thousand, eight hundred eleven".