132505431 has 8 divisors (see below), whose sum is σ = 179311104. Its totient is φ = 87018360.

The previous prime is 132505427. The next prime is 132505447. The reversal of 132505431 is 134505231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 132505431 - 2² = 132505427 is a prime.

It is a super-2 number, since 2×132505431² = 35115378488991522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132505631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329415 + ... + 329816.

It is an arithmetic number, because the mean of its divisors is an integer number (22413888).

Almost surely, 2^132505431 is an apocalyptic number.

132505431 is a deficient number, since it is larger than the sum of its proper divisors (46805673).

132505431 is an equidigital number, since it uses as much as digits as its factorization.

132505431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659301.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 132505431 is about 11511.1003383690. The cubic root of 132505431 is about 509.8133765464.

It can be divided in two parts, 13250 and 5431, that added together give a palindrome (18681).

The spelling of 132505431 in words is "one hundred thirty-two million, five hundred five thousand, four hundred thirty-one".