1123513256 has 8 divisors (see below), whose sum is σ = 2106587370. Its totient is φ = 561756624.

The previous prime is 1123513243. The next prime is 1123513271. The reversal of 1123513256 is 6523153211.

It can be written as a sum of positive squares in only one way, i.e., 705964900 + 417548356 = 26570^2 + 20434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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, 70219571 + ... + 70219586.

Almost surely, 2^1123513256 is an apocalyptic number.

It is an amenable number.

1123513256 is a deficient number, since it is larger than the sum of its proper divisors (983074114).

1123513256 is a wasteful number, since it uses less digits than its factorization.

1123513256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140439163 (or 140439159 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 1123513256 is about 33518.8492642573. The cubic root of 1123513256 is about 1039.5835536792.

Adding to 1123513256 its reverse (6523153211), we get a palindrome (7646666467).

The spelling of 1123513256 in words is "one billion, one hundred twenty-three million, five hundred thirteen thousand, two hundred fifty-six".