130521143 has 2 divisors, whose sum is σ = 130521144. Its totient is φ = 130521142.

The previous prime is 130521137. The next prime is 130521173. The reversal of 130521143 is 341125031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 130521143 - 2¹⁶ = 130455607 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 (130521103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65260571 + 65260572.

It is an arithmetic number, because the mean of its divisors is an integer number (65260572).

Almost surely, 2^130521143 is an apocalyptic number.

130521143 is a deficient number, since it is larger than the sum of its proper divisors (1).

130521143 is an equidigital number, since it uses as much as digits as its factorization.

130521143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 130521143 is about 11424.5850252865. The cubic root of 130521143 is about 507.2557236404.

Adding to 130521143 its reverse (341125031), we get a palindrome (471646174).

The spelling of 130521143 in words is "one hundred thirty million, five hundred twenty-one thousand, one hundred forty-three".