203315401 has 2 divisors, whose sum is σ = 203315402. Its totient is φ = 203315400.

The previous prime is 203315383. The next prime is 203315419. The reversal of 203315401 is 104513302.

It is a balanced prime because it is at equal distance from previous prime (203315383) and next prime (203315419).

It can be written as a sum of positive squares in only one way, i.e., 192099600 + 11215801 = 13860^2 + 3349^2 .

It is a cyclic number.

It is not a de Polignac number, because 203315401 - 2⁵ = 203315369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (203319401) 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, 101657700 + 101657701.

It is an arithmetic number, because the mean of its divisors is an integer number (101657701).

Almost surely, 2^203315401 is an apocalyptic number.

It is an amenable number.

203315401 is a deficient number, since it is larger than the sum of its proper divisors (1).

203315401 is an equidigital number, since it uses as much as digits as its factorization.

203315401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 203315401 is about 14258.8709581089. The cubic root of 203315401 is about 588.0172849208.

Adding to 203315401 its reverse (104513302), we get a palindrome (307828703).

The spelling of 203315401 in words is "two hundred three million, three hundred fifteen thousand, four hundred one".