129431344 has 60 divisors (see below), whose sum is σ = 307104600. Its totient is φ = 52545024.

The previous prime is 129431339. The next prime is 129431359. The reversal of 129431344 is 443134921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10552 + ... + 19240.

It is an arithmetic number, because the mean of its divisors is an integer number (5118410).

Almost surely, 2^129431344 is an apocalyptic number.

129431344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129431344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153552300).

129431344 is an abundant number, since it is smaller than the sum of its proper divisors (177673256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129431344 is a wasteful number, since it uses less digits than its factorization.

129431344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8730 (or 8717 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 129431344 is about 11376.7897053606. The cubic root of 129431344 is about 505.8399823133.

The spelling of 129431344 in words is "one hundred twenty-nine million, four hundred thirty-one thousand, three hundred forty-four".