133311413 has 4 divisors (see below), whose sum is σ = 135496908. Its totient is φ = 131125920.

The previous prime is 133311403. The next prime is 133311457. The reversal of 133311413 is 314113331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314113331 = 7 ⋅44873333.

It can be written as a sum of positive squares in 2 ways, for example, as 30228004 + 103083409 = 5498^2 + 10153^2 .

It is a cyclic number.

It is not a de Polignac number, because 133311413 - 2⁶ = 133311349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133311403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092656 + ... + 1092777.

It is an arithmetic number, because the mean of its divisors is an integer number (33874227).

Almost surely, 2^133311413 is an apocalyptic number.

It is an amenable number.

133311413 is a deficient number, since it is larger than the sum of its proper divisors (2185495).

133311413 is an equidigital number, since it uses as much as digits as its factorization.

133311413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185494.

The product of its digits is 324, while the sum is 20.

The square root of 133311413 is about 11546.0561665012. The cubic root of 133311413 is about 510.8449571310.

Adding to 133311413 its reverse (314113331), we get a palindrome (447424744).

The spelling of 133311413 in words is "one hundred thirty-three million, three hundred eleven thousand, four hundred thirteen".