513223142 has 16 divisors (see below), whose sum is σ = 781905312. Its totient is φ = 252601920.

The previous prime is 513223133. The next prime is 513223153. The reversal of 513223142 is 241322315.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 78167 + ... + 84477.

It is an arithmetic number, because the mean of its divisors is an integer number (48869082).

Almost surely, 2^513223142 is an apocalyptic number.

513223142 is a deficient number, since it is larger than the sum of its proper divisors (268682170).

513223142 is a wasteful number, since it uses less digits than its factorization.

513223142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6943.

The product of its digits is 1440, while the sum is 23.

The square root of 513223142 is about 22654.4287502466. The cubic root of 513223142 is about 800.6365465014.

Adding to 513223142 its reverse (241322315), we get a palindrome (754545457).

The spelling of 513223142 in words is "five hundred thirteen million, two hundred twenty-three thousand, one hundred forty-two".