133212304 has 10 divisors (see below), whose sum is σ = 258098870. Its totient is φ = 66606144.

The previous prime is 133212293. The next prime is 133212307. The reversal of 133212304 is 403212331.

It can be written as a sum of positive squares in only one way, i.e., 118374400 + 14837904 = 10880^2 + 3852^2 .

It is not an unprimeable number, because it can be changed into a prime (133212307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4162869 + ... + 4162900.

It is an arithmetic number, because the mean of its divisors is an integer number (25809887).

Almost surely, 2^133212304 is an apocalyptic number.

It is an amenable number.

133212304 is a deficient number, since it is larger than the sum of its proper divisors (124886566).

133212304 is an equidigital number, since it uses as much as digits as its factorization.

133212304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8325777 (or 8325771 counting only the distinct ones).

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

The square root of 133212304 is about 11541.7634701115. The cubic root of 133212304 is about 510.7183316018.

Adding to 133212304 its reverse (403212331), we get a palindrome (536424635).

It can be divided in two parts, 13321 and 2304, that added together give a 6-th power (15625 = 5⁶).

The spelling of 133212304 in words is "one hundred thirty-three million, two hundred twelve thousand, three hundred four".