130380821 has 2 divisors, whose sum is σ = 130380822. Its totient is φ = 130380820.

The previous prime is 130380797. The next prime is 130380829. The reversal of 130380821 is 128083031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130188100 + 192721 = 11410^2 + 439^2 .

It is an emirp because it is prime and its reverse (128083031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130380821 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130380829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65190410 + 65190411.

It is an arithmetic number, because the mean of its divisors is an integer number (65190411).

Almost surely, 2^130380821 is an apocalyptic number.

It is an amenable number.

130380821 is a deficient number, since it is larger than the sum of its proper divisors (1).

130380821 is an equidigital number, since it uses as much as digits as its factorization.

130380821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 130380821 is about 11418.4421441806. The cubic root of 130380821 is about 507.0738765739.

The spelling of 130380821 in words is "one hundred thirty million, three hundred eighty thousand, eight hundred twenty-one".