129326311 has 2 divisors, whose sum is σ = 129326312. Its totient is φ = 129326310.

The previous prime is 129326297. The next prime is 129326333. The reversal of 129326311 is 113623921.

It is a weak prime.

It is an emirp because it is prime and its reverse (113623921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129326311 - 2¹⁷ = 129195239 is a prime.

It is equal to p_7342156 and since 129326311 and 7342156 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129326311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129326381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64663155 + 64663156.

It is an arithmetic number, because the mean of its divisors is an integer number (64663156).

Almost surely, 2^129326311 is an apocalyptic number.

129326311 is a deficient number, since it is larger than the sum of its proper divisors (1).

129326311 is an equidigital number, since it uses as much as digits as its factorization.

129326311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 129326311 is about 11372.1726596108. The cubic root of 129326311 is about 505.7031162671.

The spelling of 129326311 in words is "one hundred twenty-nine million, three hundred twenty-six thousand, three hundred eleven".