203061601 has 2 divisors, whose sum is σ = 203061602. Its totient is φ = 203061600.

The previous prime is 203061589. The next prime is 203061631. The reversal of 203061601 is 106160302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120978001 + 82083600 = 10999^2 + 9060^2 .

It is a cyclic number.

It is not a de Polignac number, because 203061601 - 2⁷ = 203061473 is a prime.

It is not a weakly prime, because it can be changed into another prime (203061631) 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, 101530800 + 101530801.

It is an arithmetic number, because the mean of its divisors is an integer number (101530801).

Almost surely, 2^203061601 is an apocalyptic number.

It is an amenable number.

203061601 is a deficient number, since it is larger than the sum of its proper divisors (1).

203061601 is an equidigital number, since it uses as much as digits as its factorization.

203061601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 203061601 is about 14249.9684561054. The cubic root of 203061601 is about 587.7725077128.

The spelling of 203061601 in words is "two hundred three million, sixty-one thousand, six hundred one".