203940371 has 2 divisors, whose sum is σ = 203940372. Its totient is φ = 203940370.

The previous prime is 203940367. The next prime is 203940377. The reversal of 203940371 is 173049302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203940371 - 2² = 203940367 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (203940377) 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, 101970185 + 101970186.

It is an arithmetic number, because the mean of its divisors is an integer number (101970186).

Almost surely, 2^203940371 is an apocalyptic number.

203940371 is a deficient number, since it is larger than the sum of its proper divisors (1).

203940371 is an equidigital number, since it uses as much as digits as its factorization.

203940371 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 203940371 is about 14280.7692719965. The cubic root of 203940371 is about 588.6191695746.

Adding to 203940371 its reverse (173049302), we get a palindrome (376989673).

The spelling of 203940371 in words is "two hundred three million, nine hundred forty thousand, three hundred seventy-one".