203140403 has 2 divisors, whose sum is σ = 203140404. Its totient is φ = 203140402.

The previous prime is 203140369. The next prime is 203140417. The reversal of 203140403 is 304041302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203140403 is a prime.

It is not a weakly prime, because it can be changed into another prime (203140103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101570201 + 101570202.

It is an arithmetic number, because the mean of its divisors is an integer number (101570202).

Almost surely, 2^203140403 is an apocalyptic number.

203140403 is a deficient number, since it is larger than the sum of its proper divisors (1).

203140403 is an equidigital number, since it uses as much as digits as its factorization.

203140403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 203140403 is about 14252.7331764823. The cubic root of 203140403 is about 587.8485300606.

Adding to 203140403 its reverse (304041302), we get a palindrome (507181705).

The spelling of 203140403 in words is "two hundred three million, one hundred forty thousand, four hundred three".