129319207 has 16 divisors (see below), whose sum is σ = 139366080. Its totient is φ = 119750400.

The previous prime is 129319193. The next prime is 129319213. The reversal of 129319207 is 702913921.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129319207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129319297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71638 + ... + 73420.

It is an arithmetic number, because the mean of its divisors is an integer number (8710380).

Almost surely, 2^129319207 is an apocalyptic number.

129319207 is a deficient number, since it is larger than the sum of its proper divisors (10046873).

129319207 is a wasteful number, since it uses less digits than its factorization.

129319207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 129319207 is about 11371.8603139504. The cubic root of 129319207 is about 505.6938565357.

The spelling of 129319207 in words is "one hundred twenty-nine million, three hundred nineteen thousand, two hundred seven".