1123440413 has 2 divisors, whose sum is σ = 1123440414. Its totient is φ = 1123440412.

The previous prime is 1123440407. The next prime is 1123440431. The reversal of 1123440413 is 3140443211.

Together with next prime (1123440431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1109023204 + 14417209 = 33302^2 + 3797^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123440413 - 2¹² = 1123436317 is a prime.

It is a super-2 number, since 2×1123440413² = 2524236723123221138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123440433) 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 as a sum of consecutive naturals, namely, 561720206 + 561720207.

It is an arithmetic number, because the mean of its divisors is an integer number (561720207).

Almost surely, 2^1123440413 is an apocalyptic number.

It is an amenable number.

1123440413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123440413 is an equidigital number, since it uses as much as digits as its factorization.

1123440413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1123440413 is about 33517.7626490791. The cubic root of 1123440413 is about 1039.5610860548.

Adding to 1123440413 its reverse (3140443211), we get a palindrome (4263883624).

The spelling of 1123440413 in words is "one billion, one hundred twenty-three million, four hundred forty thousand, four hundred thirteen".