513203 has 2 divisors, whose sum is σ = 513204. Its totient is φ = 513202.

The previous prime is 513173. The next prime is 513239. The reversal of 513203 is 302315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513203 - 2¹⁸ = 251059 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (513283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256601 + 256602.

It is an arithmetic number, because the mean of its divisors is an integer number (256602).

2⁵¹³²⁰³ is an apocalyptic number.

513203 is a deficient number, since it is larger than the sum of its proper divisors (1).

513203 is an equidigital number, since it uses as much as digits as its factorization.

513203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 513203 is about 716.3818814013. The cubic root of 513203 is about 80.0626072414.

Adding to 513203 its reverse (302315), we get a palindrome (815518).

The spelling of 513203 in words is "five hundred thirteen thousand, two hundred three".