129831693 has 16 divisors (see below), whose sum is σ = 182630400. Its totient is φ = 81814320.

The previous prime is 129831673. The next prime is 129831697. The reversal of 129831693 is 396138921.

It is not a de Polignac number, because 129831693 - 2¹³ = 129823501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129831697) 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, 25668 + ... + 30306.

It is an arithmetic number, because the mean of its divisors is an integer number (11414400).

Almost surely, 2^129831693 is an apocalyptic number.

It is an amenable number.

129831693 is a deficient number, since it is larger than the sum of its proper divisors (52798707).

129831693 is a wasteful number, since it uses less digits than its factorization.

129831693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5152.

The product of its digits is 69984, while the sum is 42.

The square root of 129831693 is about 11394.3711103334. The cubic root of 129831693 is about 506.3609897786.

The spelling of 129831693 in words is "one hundred twenty-nine million, eight hundred thirty-one thousand, six hundred ninety-three".