129231607 has 2 divisors, whose sum is σ = 129231608. Its totient is φ = 129231606.

The previous prime is 129231593. The next prime is 129231701. The reversal of 129231607 is 706132921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129231607 - 2¹¹ = 129229559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129234607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64615803 + 64615804.

It is an arithmetic number, because the mean of its divisors is an integer number (64615804).

Almost surely, 2^129231607 is an apocalyptic number.

129231607 is a deficient number, since it is larger than the sum of its proper divisors (1).

129231607 is an equidigital number, since it uses as much as digits as its factorization.

129231607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 129231607 is about 11368.0080489064. The cubic root of 129231607 is about 505.5796461535.

The spelling of 129231607 in words is "one hundred twenty-nine million, two hundred thirty-one thousand, six hundred seven".