12423213 has 40 divisors (see below), whose sum is σ = 20630016. Its totient is φ = 7387200.

The previous prime is 12423211. The next prime is 12423233. The reversal of 12423213 is 31232421.

12423213 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12423213 - 2¹ = 12423211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 64948 + ... + 65138.

Almost surely, 2^12423213 is an apocalyptic number.

It is an amenable number.

12423213 is a deficient number, since it is larger than the sum of its proper divisors (8206803).

12423213 is a wasteful number, since it uses less digits than its factorization.

12423213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 278 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 12423213 is about 3524.6578557358. The cubic root of 12423213 is about 231.6032470215.

Adding to 12423213 its reverse (31232421), we get a palindrome (43655634).

The spelling of 12423213 in words is "twelve million, four hundred twenty-three thousand, two hundred thirteen".