203412133 has 2 divisors, whose sum is σ = 203412134. Its totient is φ = 203412132.

The previous prime is 203412113. The next prime is 203412137. The reversal of 203412133 is 331214302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199176769 + 4235364 = 14113^2 + 2058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203412133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203412133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203412137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101706066 + 101706067.

It is an arithmetic number, because the mean of its divisors is an integer number (101706067).

Almost surely, 2^203412133 is an apocalyptic number.

203412133 is the 7624-th centered heptagonal number.

It is an amenable number.

203412133 is a deficient number, since it is larger than the sum of its proper divisors (1).

203412133 is an equidigital number, since it uses as much as digits as its factorization.

203412133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 203412133 is about 14262.2625484178. The cubic root of 203412133 is about 588.1105244056.

Adding to 203412133 its reverse (331214302), we get a palindrome (534626435).

The spelling of 203412133 in words is "two hundred three million, four hundred twelve thousand, one hundred thirty-three".