1315433243 has 4 divisors (see below), whose sum is σ = 1360793040. Its totient is φ = 1270073448.

The previous prime is 1315433179. The next prime is 1315433263. The reversal of 1315433243 is 3423345131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3423345131 = 17 ⋅201373243.

It is a cyclic number.

It is not a de Polignac number, because 1315433243 - 2⁶ = 1315433179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 45359767 = 1315433243 / (1 + 3 + 1 + 5 + 4 + 3 + 3 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315433263) 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, 22679855 + ... + 22679912.

It is an arithmetic number, because the mean of its divisors is an integer number (340198260).

Almost surely, 2^1315433243 is an apocalyptic number.

1315433243 is a deficient number, since it is larger than the sum of its proper divisors (45359797).

1315433243 is an equidigital number, since it uses as much as digits as its factorization.

1315433243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45359796.

The product of its digits is 12960, while the sum is 29.

The square root of 1315433243 is about 36268.9018719895. The cubic root of 1315433243 is about 1095.6948094764.

Adding to 1315433243 its reverse (3423345131), we get a palindrome (4738778374).

The spelling of 1315433243 in words is "one billion, three hundred fifteen million, four hundred thirty-three thousand, two hundred forty-three".