130321 has 5 divisors (see below), whose sum is σ = 137561. Its totient is φ = 123462.

The previous prime is 130307. The next prime is 130337. The reversal of 130321 is 123031.

130321 = T₃₆₀ + T₃₆₁.

The square root of 130321 is 361.

It is a perfect power (a square, a biquadrate), and thus also a powerful number.

It is not a de Polignac number, because 130321 - 2¹¹ = 128273 is a prime.

It is a hoax number, since the sum of its digits (10) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

130321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 130298 and 130307.

It is not an unprimeable number, because it can be changed into a prime (130021) by changing a digit.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 6850 + ... + 6868.

130321 is a Friedman number, since it can be written as (10+3^2)^(3+1), using all its digits and the basic arithmetic operations.

2¹³⁰³²¹ is an apocalyptic number.

130321 is the 361-st square number.

130321 is the 181-st centered octagonal number.

It is an amenable number.

130321 is a deficient number, since it is larger than the sum of its proper divisors (7240).

130321 is an frugal number, since it uses more digits than its factorization.

130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 19 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The cubic root of 130321 is about 50.6996313257.

Adding to 130321 its reverse (123031), we get a palindrome (253352).

The spelling of 130321 in words is "one hundred thirty thousand, three hundred twenty-one".