133203413 has 6 divisors (see below), whose sum is σ = 154950966. Its totient is φ = 114174312.

The previous prime is 133203403. The next prime is 133203439. The reversal of 133203413 is 314302331.

It can be written as a sum of positive squares in only one way, i.e., 125596849 + 7606564 = 11207^2 + 2758^2 .

It is not a de Polignac number, because 133203413 - 2¹⁰ = 133202389 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 (133203403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1359170 + ... + 1359267.

It is an arithmetic number, because the mean of its divisors is an integer number (25825161).

Almost surely, 2^133203413 is an apocalyptic number.

It is an amenable number.

133203413 is a deficient number, since it is larger than the sum of its proper divisors (21747553).

133203413 is an equidigital number, since it uses as much as digits as its factorization.

133203413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718451 (or 2718444 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 133203413 is about 11541.3782972399. The cubic root of 133203413 is about 510.7069690435.

Adding to 133203413 its reverse (314302331), we get a palindrome (447505744).

The spelling of 133203413 in words is "one hundred thirty-three million, two hundred three thousand, four hundred thirteen".