129580331 has 2 divisors, whose sum is σ = 129580332. Its totient is φ = 129580330.

The previous prime is 129580277. The next prime is 129580333. The reversal of 129580331 is 133085921.

It is a strong prime.

It is an emirp because it is prime and its reverse (133085921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129580331 - 2¹⁴ = 129563947 is a prime.

It is a super-2 number, since 2×129580331² = 33582124364139122, which contains 22 as substring.

Together with 129580333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129580333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64790165 + 64790166.

It is an arithmetic number, because the mean of its divisors is an integer number (64790166).

Almost surely, 2^129580331 is an apocalyptic number.

129580331 is a deficient number, since it is larger than the sum of its proper divisors (1).

129580331 is an equidigital number, since it uses as much as digits as its factorization.

129580331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 129580331 is about 11383.3356710588. The cubic root of 129580331 is about 506.0339968409.

The spelling of 129580331 in words is "one hundred twenty-nine million, five hundred eighty thousand, three hundred thirty-one".