133320513 has 4 divisors (see below), whose sum is σ = 177760688. Its totient is φ = 88880340.

The previous prime is 133320497. The next prime is 133320521. The reversal of 133320513 is 315023331.

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 not a de Polignac number, because 133320513 - 2⁴ = 133320497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133320513.

It is not an unprimeable number, because it can be changed into a prime (133320533) 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, 22220083 + ... + 22220088.

It is an arithmetic number, because the mean of its divisors is an integer number (44440172).

Almost surely, 2^133320513 is an apocalyptic number.

It is an amenable number.

133320513 is a deficient number, since it is larger than the sum of its proper divisors (44440175).

133320513 is an equidigital number, since it uses as much as digits as its factorization.

133320513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44440174.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 133320513 is about 11546.4502337298. The cubic root of 133320513 is about 510.8565805003.

Adding to 133320513 its reverse (315023331), we get a palindrome (448343844).

The spelling of 133320513 in words is "one hundred thirty-three million, three hundred twenty thousand, five hundred thirteen".