133130612 has 6 divisors (see below), whose sum is σ = 232978578. Its totient is φ = 66565304.

The previous prime is 133130603. The next prime is 133130617. The reversal of 133130612 is 216031331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 104121616 + 29008996 = 10204^2 + 5386^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133130617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16641323 + ... + 16641330.

It is an arithmetic number, because the mean of its divisors is an integer number (38829763).

Almost surely, 2^133130612 is an apocalyptic number.

It is an amenable number.

133130612 is a deficient number, since it is larger than the sum of its proper divisors (99847966).

133130612 is a wasteful number, since it uses less digits than its factorization.

133130612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33282657 (or 33282655 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 133130612 is about 11538.2239534514. The cubic root of 133130612 is about 510.6139114841.

Adding to 133130612 its reverse (216031331), we get a palindrome (349161943).

The spelling of 133130612 in words is "one hundred thirty-three million, one hundred thirty thousand, six hundred twelve".