513909343 has 2 divisors, whose sum is σ = 513909344. Its totient is φ = 513909342.

The previous prime is 513909307. The next prime is 513909349. The reversal of 513909343 is 343909315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513909343 - 2¹⁷ = 513778271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513909349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256954671 + 256954672.

It is an arithmetic number, because the mean of its divisors is an integer number (256954672).

Almost surely, 2^513909343 is an apocalyptic number.

513909343 is a deficient number, since it is larger than the sum of its proper divisors (1).

513909343 is an equidigital number, since it uses as much as digits as its factorization.

513909343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 513909343 is about 22669.5686549171. The cubic root of 513909343 is about 800.9932158717.

The spelling of 513909343 in words is "five hundred thirteen million, nine hundred nine thousand, three hundred forty-three".