133213466 has 24 divisors (see below), whose sum is σ = 206585652. Its totient is φ = 64411200.

The previous prime is 133213397. The next prime is 133213471. The reversal of 133213466 is 664312331.

It can be written as a sum of positive squares in 2 ways, for example, as 121110025 + 12103441 = 11005^2 + 3479^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 735896 + ... + 736076.

Almost surely, 2^133213466 is an apocalyptic number.

133213466 is a deficient number, since it is larger than the sum of its proper divisors (73372186).

133213466 is an equidigital number, since it uses as much as digits as its factorization.

133213466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 327 counting only the distinct ones).

The product of its digits is 7776, while the sum is 29.

The square root of 133213466 is about 11541.8138089297. The cubic root of 133213466 is about 510.7198165822.

Adding to 133213466 its reverse (664312331), we get a palindrome (797525797).

The spelling of 133213466 in words is "one hundred thirty-three million, two hundred thirteen thousand, four hundred sixty-six".