134431520 has 24 divisors (see below), whose sum is σ = 317594844. Its totient is φ = 53772544.

The previous prime is 134431519. The next prime is 134431523. The reversal of 134431520 is 25134431.

It can be written as a sum of positive squares in 2 ways, for example, as 119159056 + 15272464 = 10916^2 + 3908^2 .

It is not an unprimeable number, because it can be changed into a prime (134431523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419939 + ... + 420258.

Almost surely, 2^134431520 is an apocalyptic number.

134431520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134431520 is an abundant number, since it is smaller than the sum of its proper divisors (183163324).

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

134431520 is an equidigital number, since it uses as much as digits as its factorization.

134431520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840212 (or 840204 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 134431520 is about 11594.4607464082. The cubic root of 134431520 is about 512.2717063722.

Adding to 134431520 its reverse (25134431), we get a palindrome (159565951).

The spelling of 134431520 in words is "one hundred thirty-four million, four hundred thirty-one thousand, five hundred twenty".