130321321 has 4 divisors (see below), whose sum is σ = 140346052. Its totient is φ = 120296592.

The previous prime is 130321313. The next prime is 130321339. The reversal of 130321321 is 123123031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73770921 + 56550400 = 8589^2 + 7520^2 .

It is not a de Polignac number, because 130321321 - 2³ = 130321313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130321295 and 130321304.

It is not an unprimeable number, because it can be changed into a prime (130321921) 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, 5012346 + ... + 5012371.

It is an arithmetic number, because the mean of its divisors is an integer number (35086513).

Almost surely, 2^130321321 is an apocalyptic number.

It is an amenable number.

130321321 is a deficient number, since it is larger than the sum of its proper divisors (10024731).

130321321 is a wasteful number, since it uses less digits than its factorization.

130321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10024730.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 130321321 is about 11415.8364126331. The cubic root of 130321321 is about 506.9967295259.

Adding to 130321321 its reverse (123123031), we get a palindrome (253444352).

The spelling of 130321321 in words is "one hundred thirty million, three hundred twenty-one thousand, three hundred twenty-one".