1123113213 has 6 divisors (see below), whose sum is σ = 1622274654. Its totient is φ = 748742136.

The previous prime is 1123113179. The next prime is 1123113221. The reversal of 1123113213 is 3123113211.

It can be written as a sum of positive squares in only one way, i.e., 1067132889 + 55980324 = 32667^2 + 7482^2 .

It is not a de Polignac number, because 1123113213 - 2¹⁰ = 1123112189 is a prime.

It is a super-2 number, since 2×1123113213² = 2522766578430366738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123113223) 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 5 ways as a sum of consecutive naturals, for example, 62395170 + ... + 62395187.

It is an arithmetic number, because the mean of its divisors is an integer number (270379109).

Almost surely, 2^1123113213 is an apocalyptic number.

It is an amenable number.

1123113213 is a deficient number, since it is larger than the sum of its proper divisors (499161441).

1123113213 is a wasteful number, since it uses less digits than its factorization.

1123113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124790363 (or 124790360 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1123113213 is about 33512.8812995839. The cubic root of 1123113213 is about 1039.4601528230.

Adding to 1123113213 its reverse (3123113211), we get a palindrome (4246226424).

The spelling of 1123113213 in words is "one billion, one hundred twenty-three million, one hundred thirteen thousand, two hundred thirteen".