513061723 has 2 divisors, whose sum is σ = 513061724. Its totient is φ = 513061722.

The previous prime is 513061673. The next prime is 513061753. The reversal of 513061723 is 327160315.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513061723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513061691 and 513061700.

It is not a weakly prime, because it can be changed into another prime (513061753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256530861 + 256530862.

It is an arithmetic number, because the mean of its divisors is an integer number (256530862).

Almost surely, 2^513061723 is an apocalyptic number.

513061723 is a deficient number, since it is larger than the sum of its proper divisors (1).

513061723 is an equidigital number, since it uses as much as digits as its factorization.

513061723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 513061723 is about 22650.8658333407. The cubic root of 513061723 is about 800.5525989343.

The spelling of 513061723 in words is "five hundred thirteen million, sixty-one thousand, seven hundred twenty-three".