203313139 has 2 divisors, whose sum is σ = 203313140. Its totient is φ = 203313138.

The previous prime is 203313119. The next prime is 203313151. The reversal of 203313139 is 931313302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203313139 - 2⁵ = 203313107 is a prime.

It is not a weakly prime, because it can be changed into another prime (203313119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101656569 + 101656570.

It is an arithmetic number, because the mean of its divisors is an integer number (101656570).

Almost surely, 2^203313139 is an apocalyptic number.

203313139 is a deficient number, since it is larger than the sum of its proper divisors (1).

203313139 is an equidigital number, since it uses as much as digits as its factorization.

203313139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 203313139 is about 14258.7916388451. The cubic root of 203313139 is about 588.0151042366.

The spelling of 203313139 in words is "two hundred three million, three hundred thirteen thousand, one hundred thirty-nine".