130712321 has 2 divisors, whose sum is σ = 130712322. Its totient is φ = 130712320.

The previous prime is 130712279. The next prime is 130712327. The reversal of 130712321 is 123217031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90250000 + 40462321 = 9500^2 + 6361^2 .

It is a cyclic number.

It is not a de Polignac number, because 130712321 - 2¹⁰ = 130711297 is a prime.

It is a super-2 number, since 2×130712321² = 34171421722414082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 130712293 and 130712302.

It is not a weakly prime, because it can be changed into another prime (130712327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65356160 + 65356161.

It is an arithmetic number, because the mean of its divisors is an integer number (65356161).

Almost surely, 2^130712321 is an apocalyptic number.

It is an amenable number.

130712321 is a deficient number, since it is larger than the sum of its proper divisors (1).

130712321 is an equidigital number, since it uses as much as digits as its factorization.

130712321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 130712321 is about 11432.9489196795. The cubic root of 130712321 is about 507.5032667411.

Adding to 130712321 its reverse (123217031), we get a palindrome (253929352).

The spelling of 130712321 in words is "one hundred thirty million, seven hundred twelve thousand, three hundred twenty-one".