130306523 has 8 divisors (see below), whose sum is σ = 136953600. Its totient is φ = 123741288.

The previous prime is 130306499. The next prime is 130306537. The reversal of 130306523 is 325603031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130306523 - 2¹⁰ = 130305499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130306723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17183 + ... + 23576.

It is an arithmetic number, because the mean of its divisors is an integer number (17119200).

Almost surely, 2^130306523 is an apocalyptic number.

130306523 is a deficient number, since it is larger than the sum of its proper divisors (6647077).

130306523 is a wasteful number, since it uses less digits than its factorization.

130306523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40921.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 130306523 is about 11415.1882595076. The cubic root of 130306523 is about 506.9775389552.

Adding to 130306523 its reverse (325603031), we get a palindrome (455909554).

The spelling of 130306523 in words is "one hundred thirty million, three hundred six thousand, five hundred twenty-three".