133243430 has 16 divisors (see below), whose sum is σ = 240347520. Its totient is φ = 53184192.

The previous prime is 133243423. The next prime is 133243441. The reversal of 133243430 is 34342331.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133243396 and 133243405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9119 + ... + 18698.

It is an arithmetic number, because the mean of its divisors is an integer number (15021720).

Almost surely, 2^133243430 is an apocalyptic number.

133243430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133243430 is a deficient number, since it is larger than the sum of its proper divisors (107104090).

133243430 is a wasteful number, since it uses less digits than its factorization.

133243430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28303.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 133243430 is about 11543.1117988175. Note that the first 3 decimals coincide. The cubic root of 133243430 is about 510.7581061581.

Adding to 133243430 its reverse (34342331), we get a palindrome (167585761).

The spelling of 133243430 in words is "one hundred thirty-three million, two hundred forty-three thousand, four hundred thirty".