1513321110523 has 2 divisors, whose sum is σ = 1513321110524. Its totient is φ = 1513321110522.

The previous prime is 1513321110503. The next prime is 1513321110563. The reversal of 1513321110523 is 3250111233151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1513321110523 - 2⁵ = 1513321110491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1513321110491 and 1513321110500.

It is not a weakly prime, because it can be changed into another prime (1513321110503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756660555261 + 756660555262.

It is an arithmetic number, because the mean of its divisors is an integer number (756660555262).

Almost surely, 2^{1513321110523} is an apocalyptic number.

1513321110523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513321110523 is an equidigital number, since it uses as much as digits as its factorization.

1513321110523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

Adding to 1513321110523 its reverse (3250111233151), we get a palindrome (4763432343674).

The spelling of 1513321110523 in words is "one trillion, five hundred thirteen billion, three hundred twenty-one million, one hundred ten thousand, five hundred twenty-three".