1123434213 has 16 divisors (see below), whose sum is σ = 1634665536. Its totient is φ = 680627840.

The previous prime is 1123434199. The next prime is 1123434229. The reversal of 1123434213 is 3124343211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1123434213 - 2⁴ = 1123434197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123434313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144481 + ... + 152057.

It is an arithmetic number, because the mean of its divisors is an integer number (102166596).

Almost surely, 2^1123434213 is an apocalyptic number.

It is an amenable number.

1123434213 is a deficient number, since it is larger than the sum of its proper divisors (511231323).

1123434213 is a wasteful number, since it uses less digits than its factorization.

1123434213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12084.

The product of its digits is 1728, while the sum is 24.

The square root of 1123434213 is about 33517.6701606779. The cubic root of 1123434213 is about 1039.5591736880.

Adding to 1123434213 its reverse (3124343211), we get a palindrome (4247777424).

The spelling of 1123434213 in words is "one billion, one hundred twenty-three million, four hundred thirty-four thousand, two hundred thirteen".