130205503 has 4 divisors (see below), whose sum is σ = 131774328. Its totient is φ = 128636680.

The previous prime is 130205483. The next prime is 130205513. The reversal of 130205503 is 305502031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305502031 = 23 ⋅13282697.

It is a cyclic number.

It is not a de Polignac number, because 130205503 - 2¹³ = 130197311 is a prime.

It is a super-2 number, since 2×130205503² = 33906946022966018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130205513) 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 3 ways as a sum of consecutive naturals, for example, 784288 + ... + 784453.

It is an arithmetic number, because the mean of its divisors is an integer number (32943582).

Almost surely, 2^130205503 is an apocalyptic number.

130205503 is a deficient number, since it is larger than the sum of its proper divisors (1568825).

130205503 is an equidigital number, since it uses as much as digits as its factorization.

130205503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568824.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 130205503 is about 11410.7625950241. The cubic root of 130205503 is about 506.8464938106.

Adding to 130205503 its reverse (305502031), we get a palindrome (435707534).

The spelling of 130205503 in words is "one hundred thirty million, two hundred five thousand, five hundred three".