513231242 has 16 divisors (see below), whose sum is σ = 782127360. Its totient is φ = 252543408.

The previous prime is 513231221. The next prime is 513231253. The reversal of 513231242 is 242132315.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44963 + ... + 55209.

It is an arithmetic number, because the mean of its divisors is an integer number (48882960).

Almost surely, 2^513231242 is an apocalyptic number.

513231242 is a deficient number, since it is larger than the sum of its proper divisors (268896118).

513231242 is a wasteful number, since it uses less digits than its factorization.

513231242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10645.

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

The square root of 513231242 is about 22654.6075225328. The cubic root of 513231242 is about 800.6407585236.

Adding to 513231242 its reverse (242132315), we get a palindrome (755363557).

The spelling of 513231242 in words is "five hundred thirteen million, two hundred thirty-one thousand, two hundred forty-two".