133130512 has 10 divisors (see below), whose sum is σ = 257940398. Its totient is φ = 66565248.

The previous prime is 133130479. The next prime is 133130513. The reversal of 133130512 is 215031331.

It can be written as a sum of positive squares in only one way, i.e., 115691536 + 17438976 = 10756^2 + 4176^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133130512.

It is not an unprimeable number, because it can be changed into a prime (133130513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4160313 + ... + 4160344.

Almost surely, 2^133130512 is an apocalyptic number.

It is an amenable number.

133130512 is a deficient number, since it is larger than the sum of its proper divisors (124809886).

133130512 is an equidigital number, since it uses as much as digits as its factorization.

133130512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8320665 (or 8320659 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 133130512 is about 11538.2196200280. The cubic root of 133130512 is about 510.6137836362.

Adding to 133130512 its reverse (215031331), we get a palindrome (348161843).

The spelling of 133130512 in words is "one hundred thirty-three million, one hundred thirty thousand, five hundred twelve".