130236523 has 4 divisors (see below), whose sum is σ = 130263280. Its totient is φ = 130209768.

The previous prime is 130236499. The next prime is 130236569. The reversal of 130236523 is 325632031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130236523 - 2¹³ = 130228331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130236023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3783 + ... + 16576.

It is an arithmetic number, because the mean of its divisors is an integer number (32565820).

Almost surely, 2^130236523 is an apocalyptic number.

130236523 is a deficient number, since it is larger than the sum of its proper divisors (26757).

130236523 is an equidigital number, since it uses as much as digits as its factorization.

130236523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26756.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 130236523 is about 11412.1217571493. The cubic root of 130236523 is about 506.8867407778.

Adding to 130236523 its reverse (325632031), we get a palindrome (455868554).

The spelling of 130236523 in words is "one hundred thirty million, two hundred thirty-six thousand, five hundred twenty-three".