133220413 has 2 divisors, whose sum is σ = 133220414. Its totient is φ = 133220412.

The previous prime is 133220383. The next prime is 133220459. The reversal of 133220413 is 314022331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88303609 + 44916804 = 9397^2 + 6702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133220413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133220713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66610206 + 66610207.

It is an arithmetic number, because the mean of its divisors is an integer number (66610207).

Almost surely, 2^133220413 is an apocalyptic number.

It is an amenable number.

133220413 is a deficient number, since it is larger than the sum of its proper divisors (1).

133220413 is an equidigital number, since it uses as much as digits as its factorization.

133220413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 133220413 is about 11542.1147542381. The cubic root of 133220413 is about 510.7286943356.

Adding to 133220413 its reverse (314022331), we get a palindrome (447242744).

The spelling of 133220413 in words is "one hundred thirty-three million, two hundred twenty thousand, four hundred thirteen".