130520423 has 32 divisors (see below), whose sum is σ = 155492352. Its totient is φ = 108345600.

The previous prime is 130520413. The next prime is 130520431. The reversal of 130520423 is 324025031.

It is a happy number.

It is not a de Polignac number, because 130520423 - 2⁸ = 130520167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130520395 and 130520404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130520413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 683258 + ... + 683448.

It is an arithmetic number, because the mean of its divisors is an integer number (4859136).

Almost surely, 2^130520423 is an apocalyptic number.

130520423 is a deficient number, since it is larger than the sum of its proper divisors (24971929).

130520423 is a wasteful number, since it uses less digits than its factorization.

130520423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 130520423 is about 11424.5535142517. The cubic root of 130520423 is about 507.2547909057.

Adding to 130520423 its reverse (324025031), we get a palindrome (454545454).

The spelling of 130520423 in words is "one hundred thirty million, five hundred twenty thousand, four hundred twenty-three".