Search a number
-
+
130530223 = 306142643
BaseRepresentation
bin1111100011110…
…11101110101111
3100002121121210201
413301323232233
5231403431343
620541414331
73143326405
oct761735657
9302547721
10130530223
116775431a
123786a3a7
1321072c25
141349b475
15b6d594d
hex7c7bbaf

130530223 has 4 divisors (see below), whose sum is σ = 130575928. Its totient is φ = 130484520.

The previous prime is 130530203. The next prime is 130530227. The reversal of 130530223 is 322035031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322035031 = 674806493.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130530223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130530223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130530227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18261 + ... + 24382.

It is an arithmetic number, because the mean of its divisors is an integer number (32643982).

Almost surely, 2130530223 is an apocalyptic number.

130530223 is a deficient number, since it is larger than the sum of its proper divisors (45705).

130530223 is an equidigital number, since it uses as much as digits as its factorization.

130530223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45704.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 130530223 is about 11424.9824069886. The cubic root of 130530223 is about 507.2674861668.

Adding to 130530223 its reverse (322035031), we get a palindrome (452565254).

The spelling of 130530223 in words is "one hundred thirty million, five hundred thirty thousand, two hundred twenty-three".

Divisors: 1 3061 42643 130530223