133806013 has 16 divisors (see below), whose sum is σ = 152616960. Its totient is φ = 116204400.

The previous prime is 133806011. The next prime is 133806047. The reversal of 133806013 is 310608331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 133806013 - 2¹ = 133806011 is a prime.

It is a super-2 number, since 2×133806013² = 35808098229912338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133806011) 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, 24456 + ... + 29422.

It is an arithmetic number, because the mean of its divisors is an integer number (9538560).

Almost surely, 2^133806013 is an apocalyptic number.

It is an amenable number.

133806013 is a deficient number, since it is larger than the sum of its proper divisors (18810947).

133806013 is a wasteful number, since it uses less digits than its factorization.

133806013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5088.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 133806013 is about 11567.4549058987. The cubic root of 133806013 is about 511.4759410863.

The spelling of 133806013 in words is "one hundred thirty-three million, eight hundred six thousand, thirteen".