130129991 has 2 divisors, whose sum is σ = 130129992. Its totient is φ = 130129990.

The previous prime is 130129963. The next prime is 130130027. The reversal of 130129991 is 199921031.

It is a weak prime.

It is an emirp because it is prime and its reverse (199921031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130129991 - 2⁶ = 130129927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130129091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65064995 + 65064996.

It is an arithmetic number, because the mean of its divisors is an integer number (65064996).

Almost surely, 2^130129991 is an apocalyptic number.

130129991 is a deficient number, since it is larger than the sum of its proper divisors (1).

130129991 is an equidigital number, since it uses as much as digits as its factorization.

130129991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 130129991 is about 11407.4533091308. The cubic root of 130129991 is about 506.7484938728.

The spelling of 130129991 in words is "one hundred thirty million, one hundred twenty-nine thousand, nine hundred ninety-one".