203512493 has 2 divisors, whose sum is σ = 203512494. Its totient is φ = 203512492.

The previous prime is 203512481. The next prime is 203512501. The reversal of 203512493 is 394215302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125843524 + 77668969 = 11218^2 + 8813^2 .

It is a cyclic number.

It is not a de Polignac number, because 203512493 - 2⁶ = 203512429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203512403) 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, 101756246 + 101756247.

It is an arithmetic number, because the mean of its divisors is an integer number (101756247).

Almost surely, 2^203512493 is an apocalyptic number.

It is an amenable number.

203512493 is a deficient number, since it is larger than the sum of its proper divisors (1).

203512493 is an equidigital number, since it uses as much as digits as its factorization.

203512493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 203512493 is about 14265.7804903903. The cubic root of 203512493 is about 588.2072296628.

Adding to 203512493 its reverse (394215302), we get a palindrome (597727795).

The spelling of 203512493 in words is "two hundred three million, five hundred twelve thousand, four hundred ninety-three".