132731285 has 4 divisors (see below), whose sum is σ = 159277548. Its totient is φ = 106185024.

The previous prime is 132731281. The next prime is 132731293. The reversal of 132731285 is 582137231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103754596 + 28976689 = 10186^2 + 5383^2 .

It is a cyclic number.

It is not a de Polignac number, because 132731285 - 2² = 132731281 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132731281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13273124 + ... + 13273133.

It is an arithmetic number, because the mean of its divisors is an integer number (39819387).

Almost surely, 2^132731285 is an apocalyptic number.

It is an amenable number.

132731285 is a deficient number, since it is larger than the sum of its proper divisors (26546263).

132731285 is an equidigital number, since it uses as much as digits as its factorization.

132731285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26546262.

The product of its digits is 10080, while the sum is 32.

The square root of 132731285 is about 11520.9064313534. The cubic root of 132731285 is about 510.1028691636.

The spelling of 132731285 in words is "one hundred thirty-two million, seven hundred thirty-one thousand, two hundred eighty-five".