131502432 has 48 divisors (see below), whose sum is σ = 345894192. Its totient is φ = 43745280.

The previous prime is 131502409. The next prime is 131502499. The reversal of 131502432 is 234205131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 131502399 and 131502408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60468 + ... + 62604.

It is an arithmetic number, because the mean of its divisors is an integer number (7206129).

Almost surely, 2^131502432 is an apocalyptic number.

131502432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131502432 is an abundant number, since it is smaller than the sum of its proper divisors (214391760).

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

131502432 is a wasteful number, since it uses less digits than its factorization.

131502432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791 (or 2783 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 131502432 is about 11467.4509809286. The cubic root of 131502432 is about 508.5237741582.

Adding to 131502432 its reverse (234205131), we get a palindrome (365707563).

The spelling of 131502432 in words is "one hundred thirty-one million, five hundred two thousand, four hundred thirty-two".