133311204 has 48 divisors (see below), whose sum is σ = 372211840. Its totient is φ = 41018400.

The previous prime is 133311203. The next prime is 133311287. The reversal of 133311204 is 402113331.

It is a super-2 number, since 2×133311204² = 35543754223859232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (133311203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46072 + ... + 48879.

Almost surely, 2^133311204 is an apocalyptic number.

It is an amenable number.

133311204 is an abundant number, since it is smaller than the sum of its proper divisors (238900636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133311204 is a wasteful number, since it uses less digits than its factorization.

133311204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94977 (or 94969 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 133311204 is about 11546.0471157882. The cubic root of 133311204 is about 510.8446901705.

Adding to 133311204 its reverse (402113331), we get a palindrome (535424535).

It can be divided in two parts, 13331 and 1204, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 133311204 in words is "one hundred thirty-three million, three hundred eleven thousand, two hundred four".