1513113523 has 2 divisors, whose sum is σ = 1513113524. Its totient is φ = 1513113522.

The previous prime is 1513113521. The next prime is 1513113529. The reversal of 1513113523 is 3253113151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1513113523 - 2¹ = 1513113521 is a prime.

Together with 1513113521, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1513113521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756556761 + 756556762.

It is an arithmetic number, because the mean of its divisors is an integer number (756556762).

Almost surely, 2^1513113523 is an apocalyptic number.

1513113523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513113523 is an equidigital number, since it uses as much as digits as its factorization.

1513113523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 25.

The square root of 1513113523 is about 38898.7599159665. The cubic root of 1513113523 is about 1148.0403988402.

Adding to 1513113523 its reverse (3253113151), we get a palindrome (4766226674).

The spelling of 1513113523 in words is "one billion, five hundred thirteen million, one hundred thirteen thousand, five hundred twenty-three".