1123003513 has 4 divisors (see below), whose sum is σ = 1135621620. Its totient is φ = 1110385408.

The previous prime is 1123003507. The next prime is 1123003537. The reversal of 1123003513 is 3153003211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 736959609 + 386043904 = 27147^2 + 19648^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123003513 - 2⁵ = 1123003481 is a prime.

It is a super-2 number, since 2×1123003513² = 2522273780420682338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123003213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6308920 + ... + 6309097.

It is an arithmetic number, because the mean of its divisors is an integer number (283905405).

Almost surely, 2^1123003513 is an apocalyptic number.

It is an amenable number.

1123003513 is a deficient number, since it is larger than the sum of its proper divisors (12618107).

1123003513 is an equidigital number, since it uses as much as digits as its factorization.

1123003513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12618106.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1123003513 is about 33511.2445755152. The cubic root of 1123003513 is about 1039.4263086566.

Adding to 1123003513 its reverse (3153003211), we get a palindrome (4276006724).

The spelling of 1123003513 in words is "one billion, one hundred twenty-three million, three thousand, five hundred thirteen".