513531242 has 8 divisors (see below), whose sum is σ = 880339296. Its totient is φ = 220084812.

The previous prime is 513531203. The next prime is 513531247. The reversal of 513531242 is 242135315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (513531247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18340388 + ... + 18340415.

It is an arithmetic number, because the mean of its divisors is an integer number (110042412).

Almost surely, 2^513531242 is an apocalyptic number.

513531242 is a deficient number, since it is larger than the sum of its proper divisors (366808054).

513531242 is a wasteful number, since it uses less digits than its factorization.

513531242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36680812.

The product of its digits is 3600, while the sum is 26.

The square root of 513531242 is about 22661.2277249049. The cubic root of 513531242 is about 800.7967281419.

Adding to 513531242 its reverse (242135315), we get a palindrome (755666557).

The spelling of 513531242 in words is "five hundred thirteen million, five hundred thirty-one thousand, two hundred forty-two".