513047203 has 2 divisors, whose sum is σ = 513047204. Its totient is φ = 513047202.

The previous prime is 513047191. The next prime is 513047209. The reversal of 513047203 is 302740315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513047203 - 2¹³ = 513039011 is a prime.

It is a super-2 number, since 2×513047203² = 526434865012246418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (513047209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256523601 + 256523602.

It is an arithmetic number, because the mean of its divisors is an integer number (256523602).

Almost surely, 2^513047203 is an apocalyptic number.

513047203 is a deficient number, since it is larger than the sum of its proper divisors (1).

513047203 is an equidigital number, since it uses as much as digits as its factorization.

513047203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 513047203 is about 22650.5453135239. The cubic root of 513047203 is about 800.5450467998.

Adding to 513047203 its reverse (302740315), we get a palindrome (815787518).

The spelling of 513047203 in words is "five hundred thirteen million, forty-seven thousand, two hundred three".