133113331 has 4 divisors (see below), whose sum is σ = 143352832. Its totient is φ = 122873832.

The previous prime is 133113329. The next prime is 133113361. The reversal of 133113331 is 133311331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133311331 = 17 ⋅7841843.

It is a cyclic number.

It is not a de Polignac number, because 133113331 - 2¹ = 133113329 is a prime.

It is a super-2 number, since 2×133113331² = 35438317779831122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133113299 and 133113308.

It is not an unprimeable number, because it can be changed into a prime (133113301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5119731 + ... + 5119756.

It is an arithmetic number, because the mean of its divisors is an integer number (35838208).

Almost surely, 2^133113331 is an apocalyptic number.

133113331 is a deficient number, since it is larger than the sum of its proper divisors (10239501).

133113331 is a wasteful number, since it uses less digits than its factorization.

133113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10239500.

The product of its digits is 243, while the sum is 19.

The square root of 133113331 is about 11537.4750703956. The cubic root of 133113331 is about 510.5918171396.

Adding to 133113331 its reverse (133311331), we get a palindrome (266424662).

The spelling of 133113331 in words is "one hundred thirty-three million, one hundred thirteen thousand, three hundred thirty-one".