203307149 has 2 divisors, whose sum is σ = 203307150. Its totient is φ = 203307148.

The previous prime is 203307113. The next prime is 203307161. The reversal of 203307149 is 941703302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202151524 + 1155625 = 14218^2 + 1075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203307149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203307109) by changing a digit.

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 as a sum of consecutive naturals, namely, 101653574 + 101653575.

It is an arithmetic number, because the mean of its divisors is an integer number (101653575).

Almost surely, 2^203307149 is an apocalyptic number.

It is an amenable number.

203307149 is a deficient number, since it is larger than the sum of its proper divisors (1).

203307149 is an equidigital number, since it uses as much as digits as its factorization.

203307149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 203307149 is about 14258.5815914487. The cubic root of 203307149 is about 588.0093294909.

The spelling of 203307149 in words is "two hundred three million, three hundred seven thousand, one hundred forty-nine".