131429320 has 64 divisors (see below), whose sum is σ = 324051840. Its totient is φ = 47577600.

The previous prime is 131429299. The next prime is 131429323. The reversal of 131429320 is 23924131.

It is not an unprimeable number, because it can be changed into a prime (131429323) 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, 123109 + ... + 124171.

It is an arithmetic number, because the mean of its divisors is an integer number (5063310).

Almost surely, 2^131429320 is an apocalyptic number.

131429320 is a gapful number since it is divisible by the number (10) 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 131429320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162025920).

131429320 is an abundant number, since it is smaller than the sum of its proper divisors (192622520).

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

131429320 is a wasteful number, since it uses less digits than its factorization.

131429320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 131429320 is about 11464.2627325092. The cubic root of 131429320 is about 508.4295146023.

The spelling of 131429320 in words is "one hundred thirty-one million, four hundred twenty-nine thousand, three hundred twenty".