133236013 has 2 divisors, whose sum is σ = 133236014. Its totient is φ = 133236012.

The previous prime is 133235957. The next prime is 133236043. The reversal of 133236013 is 310632331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78801129 + 54434884 = 8877^2 + 7378^2 .

It is an emirp because it is prime and its reverse (310632331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133236013 - 2¹³ = 133227821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133236043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66618006 + 66618007.

It is an arithmetic number, because the mean of its divisors is an integer number (66618007).

Almost surely, 2^133236013 is an apocalyptic number.

It is an amenable number.

133236013 is a deficient number, since it is larger than the sum of its proper divisors (1).

133236013 is an equidigital number, since it uses as much as digits as its factorization.

133236013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 133236013 is about 11542.7905204937. The cubic root of 133236013 is about 510.7486288598.

Adding to 133236013 its reverse (310632331), we get a palindrome (443868344).

The spelling of 133236013 in words is "one hundred thirty-three million, two hundred thirty-six thousand, thirteen".