513223343 has 2 divisors, whose sum is σ = 513223344. Its totient is φ = 513223342.

The previous prime is 513223331. The next prime is 513223367. The reversal of 513223343 is 343322315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513223343 - 2¹² = 513219247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513223393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256611671 + 256611672.

It is an arithmetic number, because the mean of its divisors is an integer number (256611672).

Almost surely, 2^513223343 is an apocalyptic number.

513223343 is a deficient number, since it is larger than the sum of its proper divisors (1).

513223343 is an equidigital number, since it uses as much as digits as its factorization.

513223343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 26.

The square root of 513223343 is about 22654.4331864649. The cubic root of 513223343 is about 800.6366510224.

Adding to 513223343 its reverse (343322315), we get a palindrome (856545658).

The spelling of 513223343 in words is "five hundred thirteen million, two hundred twenty-three thousand, three hundred forty-three".