1123611213 has 8 divisors (see below), whose sum is σ = 1546475776. Its totient is φ = 724910400.

The previous prime is 1123611193. The next prime is 1123611217. The reversal of 1123611213 is 3121163211.

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

It is not a de Polignac number, because 1123611213 - 2⁶ = 1123611149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123611213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123611217) 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, 6040828 + ... + 6041013.

It is an arithmetic number, because the mean of its divisors is an integer number (193309472).

Almost surely, 2^1123611213 is an apocalyptic number.

It is an amenable number.

1123611213 is a deficient number, since it is larger than the sum of its proper divisors (422864563).

1123611213 is a wasteful number, since it uses less digits than its factorization.

1123611213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081875.

The product of its digits is 216, while the sum is 21.

The square root of 1123611213 is about 33520.3104550062. The cubic root of 1123611213 is about 1039.6137659104.

Adding to 1123611213 its reverse (3121163211), we get a palindrome (4244774424).

The spelling of 1123611213 in words is "one billion, one hundred twenty-three million, six hundred eleven thousand, two hundred thirteen".