203428481 has 2 divisors, whose sum is σ = 203428482. Its totient is φ = 203428480.

The previous prime is 203428453. The next prime is 203428483. The reversal of 203428481 is 184824302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198951025 + 4477456 = 14105^2 + 2116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203428481 is a prime.

It is a super-2 number, since 2×203428481² = 82766293763934722, which contains 22 as substring.

Together with 203428483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (203428483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101714240 + 101714241.

It is an arithmetic number, because the mean of its divisors is an integer number (101714241).

Almost surely, 2^203428481 is an apocalyptic number.

It is an amenable number.

203428481 is a deficient number, since it is larger than the sum of its proper divisors (1).

203428481 is an equidigital number, since it uses as much as digits as its factorization.

203428481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 203428481 is about 14262.8356577505. The cubic root of 203428481 is about 588.1262792398.

The spelling of 203428481 in words is "two hundred three million, four hundred twenty-eight thousand, four hundred eighty-one".