1315352243 has 2 divisors, whose sum is σ = 1315352244. Its totient is φ = 1315352242.

The previous prime is 1315352231. The next prime is 1315352281. The reversal of 1315352243 is 3422535131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1315352243 - 2¹² = 1315348147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315351243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657676121 + 657676122.

It is an arithmetic number, because the mean of its divisors is an integer number (657676122).

Almost surely, 2^1315352243 is an apocalyptic number.

1315352243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315352243 is an equidigital number, since it uses as much as digits as its factorization.

1315352243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 1315352243 is about 36267.7851956802. The cubic root of 1315352243 is about 1095.6723192685.

Adding to 1315352243 its reverse (3422535131), we get a palindrome (4737887374).

The spelling of 1315352243 in words is "one billion, three hundred fifteen million, three hundred fifty-two thousand, two hundred forty-three".