203940461 has 2 divisors, whose sum is σ = 203940462. Its totient is φ = 203940460.

The previous prime is 203940439. The next prime is 203940469. The reversal of 203940461 is 164049302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203775625 + 164836 = 14275^2 + 406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203940461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203940469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101970230 + 101970231.

It is an arithmetic number, because the mean of its divisors is an integer number (101970231).

Almost surely, 2^203940461 is an apocalyptic number.

It is an amenable number.

203940461 is a deficient number, since it is larger than the sum of its proper divisors (1).

203940461 is an equidigital number, since it uses as much as digits as its factorization.

203940461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 203940461 is about 14280.7724230869. The cubic root of 203940461 is about 588.6192561616.

Adding to 203940461 its reverse (164049302), we get a palindrome (367989763).

The spelling of 203940461 in words is "two hundred three million, nine hundred forty thousand, four hundred sixty-one".