132731213 has 4 divisors (see below), whose sum is σ = 133316160. Its totient is φ = 132146268.

The previous prime is 132731197. The next prime is 132731219. The reversal of 132731213 is 312137231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 132731213 - 2⁴ = 132731197 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 (132731219) 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, 292133 + ... + 292586.

It is an arithmetic number, because the mean of its divisors is an integer number (33329040).

Almost surely, 2^132731213 is an apocalyptic number.

It is an amenable number.

132731213 is a deficient number, since it is larger than the sum of its proper divisors (584947).

132731213 is an equidigital number, since it uses as much as digits as its factorization.

132731213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584946.

The product of its digits is 756, while the sum is 23.

The square root of 132731213 is about 11520.9033065988. The cubic root of 132731213 is about 510.1027769286.

Adding to 132731213 its reverse (312137231), we get a palindrome (444868444).

The spelling of 132731213 in words is "one hundred thirty-two million, seven hundred thirty-one thousand, two hundred thirteen".