133513366 has 32 divisors (see below), whose sum is σ = 236130048. Its totient is φ = 55429920.

The previous prime is 133513363. The next prime is 133513421. The reversal of 133513366 is 663315331.

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 15 ways as a sum of consecutive naturals, for example, 78016 + ... + 79708.

It is an arithmetic number, because the mean of its divisors is an integer number (7379064).

Almost surely, 2^133513366 is an apocalyptic number.

133513366 is a deficient number, since it is larger than the sum of its proper divisors (102616682).

133513366 is a wasteful number, since it uses less digits than its factorization.

133513366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876.

The product of its digits is 14580, while the sum is 31.

The square root of 133513366 is about 11554.7983972028. The cubic root of 133513366 is about 511.1027860683.

Adding to 133513366 its reverse (663315331), we get a palindrome (796828697).

The spelling of 133513366 in words is "one hundred thirty-three million, five hundred thirteen thousand, three hundred sixty-six".