130213505 has 8 divisors (see below), whose sum is σ = 156906024. Its totient is φ = 103737600.

The previous prime is 130213487. The next prime is 130213507. The reversal of 130213505 is 505312031.

It can be written as a sum of positive squares in 4 ways, for example, as 36336784 + 93876721 = 6028^2 + 9689^2 .

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

It is not a de Polignac number, because 130213505 - 2¹⁸ = 129951361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130213507) 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 7 ways as a sum of consecutive naturals, for example, 52826 + ... + 55235.

It is an arithmetic number, because the mean of its divisors is an integer number (19613253).

Almost surely, 2^130213505 is an apocalyptic number.

It is an amenable number.

130213505 is a deficient number, since it is larger than the sum of its proper divisors (26692519).

130213505 is a wasteful number, since it uses less digits than its factorization.

130213505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108307.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 130213505 is about 11411.1132235203. The cubic root of 130213505 is about 506.8568766348.

Adding to 130213505 its reverse (505312031), we get a palindrome (635525536).

The spelling of 130213505 in words is "one hundred thirty million, two hundred thirteen thousand, five hundred five".