1123301213 has 4 divisors (see below), whose sum is σ = 1159536768. Its totient is φ = 1087065660.

The previous prime is 1123301191. The next prime is 1123301219. The reversal of 1123301213 is 3121033211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3121033211 = 131 ⋅23824681.

It is a cyclic number.

It is not a de Polignac number, because 1123301213 - 2¹⁸ = 1123039069 is a prime.

It is a super-3 number, since 3×1123301213³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123301191 and 1123301200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123301219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18117731 + ... + 18117792.

It is an arithmetic number, because the mean of its divisors is an integer number (289884192).

Almost surely, 2^1123301213 is an apocalyptic number.

It is an amenable number.

1123301213 is a deficient number, since it is larger than the sum of its proper divisors (36235555).

1123301213 is an equidigital number, since it uses as much as digits as its factorization.

1123301213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36235554.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1123301213 is about 33515.6860738371. The cubic root of 1123301213 is about 1039.5181486403.

Adding to 1123301213 its reverse (3121033211), we get a palindrome (4244334424).

The spelling of 1123301213 in words is "one billion, one hundred twenty-three million, three hundred one thousand, two hundred thirteen".