1323055513 has 4 divisors (see below), whose sum is σ = 1424829028. Its totient is φ = 1221282000.

The previous prime is 1323055511. The next prime is 1323055543. The reversal of 1323055513 is 3155503231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3155503231 = 10709 ⋅294659.

It can be written as a sum of positive squares in 2 ways, for example, as 444703744 + 878351769 = 21088^2 + 29637^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323055513 - 2¹ = 1323055511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323055511) 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, 50886738 + ... + 50886763.

It is an arithmetic number, because the mean of its divisors is an integer number (356207257).

Almost surely, 2^1323055513 is an apocalyptic number.

1323055513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1323055513 is a deficient number, since it is larger than the sum of its proper divisors (101773515).

1323055513 is a wasteful number, since it uses less digits than its factorization.

1323055513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101773514.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 1323055513 is about 36373.8300567867. The cubic root of 1323055513 is about 1097.8070672168.

Adding to 1323055513 its reverse (3155503231), we get a palindrome (4478558744).

The spelling of 1323055513 in words is "one billion, three hundred twenty-three million, fifty-five thousand, five hundred thirteen".