1315011323 has 4 divisors (see below), whose sum is σ = 1315350960. Its totient is φ = 1314671688.

The previous prime is 1315011311. The next prime is 1315011329. The reversal of 1315011323 is 3231105131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3231105131 = 7039 ⋅459029.

It is a cyclic number.

It is not a de Polignac number, because 1315011323 - 2²⁰ = 1313962747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1315011295 and 1315011304.

It is not an unprimeable number, because it can be changed into a prime (1315011329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163943 + ... + 171776.

It is an arithmetic number, because the mean of its divisors is an integer number (328837740).

Almost surely, 2^1315011323 is an apocalyptic number.

1315011323 is a deficient number, since it is larger than the sum of its proper divisors (339637).

1315011323 is an equidigital number, since it uses as much as digits as its factorization.

1315011323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339636.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1315011323 is about 36263.0848522295. The cubic root of 1315011323 is about 1095.5776503600.

Adding to 1315011323 its reverse (3231105131), we get a palindrome (4546116454).

The spelling of 1315011323 in words is "one billion, three hundred fifteen million, eleven thousand, three hundred twenty-three".