133615313 has 16 divisors (see below), whose sum is σ = 147598080. Its totient is φ = 120185856.

The previous prime is 133615289. The next prime is 133615327. The reversal of 133615313 is 313516331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 133615313 - 2¹⁴ = 133598929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133615333) 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, 231281 + ... + 231857.

It is an arithmetic number, because the mean of its divisors is an integer number (9224880).

Almost surely, 2^133615313 is an apocalyptic number.

133615313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

133615313 is a deficient number, since it is larger than the sum of its proper divisors (13982767).

133615313 is a wasteful number, since it uses less digits than its factorization.

133615313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its digits is 2430, while the sum is 26.

The square root of 133615313 is about 11559.2090127309. The cubic root of 133615313 is about 511.2328408107.

The spelling of 133615313 in words is "one hundred thirty-three million, six hundred fifteen thousand, three hundred thirteen".