133144530 has 16 divisors (see below), whose sum is σ = 319546944. Its totient is φ = 35505200.

The previous prime is 133144513. The next prime is 133144541. The reversal of 133144530 is 35441331.

It is a happy number.

It is a super-3 number, since 3×133144530³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133144530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2219046 + ... + 2219105.

It is an arithmetic number, because the mean of its divisors is an integer number (19971684).

Almost surely, 2^133144530 is an apocalyptic number.

133144530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133144530 is an abundant number, since it is smaller than the sum of its proper divisors (186402414).

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

133144530 is a wasteful number, since it uses less digits than its factorization.

133144530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438161.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 133144530 is about 11538.8270634411. The cubic root of 133144530 is about 510.6317047291.

Adding to 133144530 its reverse (35441331), we get a palindrome (168585861).

The spelling of 133144530 in words is "one hundred thirty-three million, one hundred forty-four thousand, five hundred thirty".