133320232 has 8 divisors (see below), whose sum is σ = 249975450. Its totient is φ = 66660112.

The previous prime is 133320227. The next prime is 133320241. The reversal of 133320232 is 232023331.

It is a happy number.

133320232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 119377476 + 13942756 = 10926^2 + 3734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8332507 + ... + 8332522.

Almost surely, 2^133320232 is an apocalyptic number.

It is an amenable number.

133320232 is a deficient number, since it is larger than the sum of its proper divisors (116655218).

133320232 is a wasteful number, since it uses less digits than its factorization.

133320232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16665035 (or 16665031 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 133320232 is about 11546.4380654815. The cubic root of 133320232 is about 510.8562215888.

Adding to 133320232 its reverse (232023331), we get a palindrome (365343563).

The spelling of 133320232 in words is "one hundred thirty-three million, three hundred twenty thousand, two hundred thirty-two".