132397813 has 4 divisors (see below), whose sum is σ = 132430540. Its totient is φ = 132365088.

The previous prime is 132397777. The next prime is 132397873. The reversal of 132397813 is 318793231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 318793231 = 17 ⋅18752543.

It can be written as a sum of positive squares in 2 ways, for example, as 59089969 + 73307844 = 7687^2 + 8562^2 .

It is a cyclic number.

It is not a de Polignac number, because 132397813 - 2¹⁷ = 132266741 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 (132397873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9270 + ... + 18727.

It is an arithmetic number, because the mean of its divisors is an integer number (33107635).

Almost surely, 2^132397813 is an apocalyptic number.

It is an amenable number.

132397813 is a deficient number, since it is larger than the sum of its proper divisors (32727).

132397813 is an equidigital number, since it uses as much as digits as its factorization.

132397813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32726.

The product of its digits is 27216, while the sum is 37.

The square root of 132397813 is about 11506.4248574438. The cubic root of 132397813 is about 509.6753194226.

The spelling of 132397813 in words is "one hundred thirty-two million, three hundred ninety-seven thousand, eight hundred thirteen".