203163397 has 2 divisors, whose sum is σ = 203163398. Its totient is φ = 203163396.

The previous prime is 203163391. The next prime is 203163421. The reversal of 203163397 is 793361302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118504996 + 84658401 = 10886^2 + 9201^2 .

It is a cyclic number.

It is not a de Polignac number, because 203163397 - 2¹⁹ = 202639109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203163391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101581698 + 101581699.

It is an arithmetic number, because the mean of its divisors is an integer number (101581699).

Almost surely, 2^203163397 is an apocalyptic number.

It is an amenable number.

203163397 is a deficient number, since it is larger than the sum of its proper divisors (1).

203163397 is an equidigital number, since it uses as much as digits as its factorization.

203163397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 203163397 is about 14253.5398059570. The cubic root of 203163397 is about 587.8707092675.

The spelling of 203163397 in words is "two hundred three million, one hundred sixty-three thousand, three hundred ninety-seven".