133201312 has 24 divisors (see below), whose sum is σ = 263920356. Its totient is φ = 66173952.

The previous prime is 133201309. The next prime is 133201319. The reversal of 133201312 is 213102331.

It can be written as a sum of positive squares in 2 ways, for example, as 122677776 + 10523536 = 11076^2 + 3244^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (133201319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8233 + ... + 18280.

Almost surely, 2^133201312 is an apocalyptic number.

It is an amenable number.

133201312 is a deficient number, since it is larger than the sum of its proper divisors (130719044).

133201312 is a wasteful number, since it uses less digits than its factorization.

133201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26680 (or 26672 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133201312 is about 11541.2872765563. The cubic root of 133201312 is about 510.7042839247.

Adding to 133201312 its reverse (213102331), we get a palindrome (346303643).

The spelling of 133201312 in words is "one hundred thirty-three million, two hundred one thousand, three hundred twelve".