513223471 has 2 divisors, whose sum is σ = 513223472. Its totient is φ = 513223470.

The previous prime is 513223457. The next prime is 513223483. The reversal of 513223471 is 174322315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513223471 - 2⁷ = 513223343 is a prime.

It is a super-3 number, since 3×513223471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (510223471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256611735 + 256611736.

It is an arithmetic number, because the mean of its divisors is an integer number (256611736).

Almost surely, 2^513223471 is an apocalyptic number.

513223471 is a deficient number, since it is larger than the sum of its proper divisors (1).

513223471 is an equidigital number, since it uses as much as digits as its factorization.

513223471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 513223471 is about 22654.4360115188. The cubic root of 513223471 is about 800.6367175831.

Adding to 513223471 its reverse (174322315), we get a palindrome (687545786).

The spelling of 513223471 in words is "five hundred thirteen million, two hundred twenty-three thousand, four hundred seventy-one".