133513365 has 8 divisors (see below), whose sum is σ = 213621408. Its totient is φ = 71207120.

The previous prime is 133513363. The next prime is 133513421. The reversal of 133513365 is 563315331.

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

It is not a de Polignac number, because 133513365 - 2¹ = 133513363 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133513363) 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, 4450431 + ... + 4450460.

It is an arithmetic number, because the mean of its divisors is an integer number (26702676).

Almost surely, 2^133513365 is an apocalyptic number.

133513365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133513365 is a deficient number, since it is larger than the sum of its proper divisors (80108043).

133513365 is an equidigital number, since it uses as much as digits as its factorization.

133513365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8900899.

The product of its digits is 12150, while the sum is 30.

The square root of 133513365 is about 11554.7983539307. The cubic root of 133513365 is about 511.1027847922.

Adding to 133513365 its reverse (563315331), we get a palindrome (696828696).

The spelling of 133513365 in words is "one hundred thirty-three million, five hundred thirteen thousand, three hundred sixty-five".