1315234321523 has 2 divisors, whose sum is σ = 1315234321524. Its totient is φ = 1315234321522.

The previous prime is 1315234321483. The next prime is 1315234321561. The reversal of 1315234321523 is 3251234325131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315234321523 - 2⁸ = 1315234321267 is a prime.

It is a super-2 number, since 2×1315234321523² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1315234321123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657617160761 + 657617160762.

It is an arithmetic number, because the mean of its divisors is an integer number (657617160762).

Almost surely, 2^{1315234321523} is an apocalyptic number.

1315234321523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315234321523 is an equidigital number, since it uses as much as digits as its factorization.

1315234321523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 35.

Adding to 1315234321523 its reverse (3251234325131), we get a palindrome (4566468646654).

The spelling of 1315234321523 in words is "one trillion, three hundred fifteen billion, two hundred thirty-four million, three hundred twenty-one thousand, five hundred twenty-three".