513112243 has 8 divisors (see below), whose sum is σ = 594673920. Its totient is φ = 433615560.

The previous prime is 513112231. The next prime is 513112247. The reversal of 513112243 is 342211315.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-513112243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513112247) 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 in 7 ways as a sum of consecutive naturals, for example, 515713 + ... + 516706.

It is an arithmetic number, because the mean of its divisors is an integer number (74334240).

Almost surely, 2^513112243 is an apocalyptic number.

513112243 is a deficient number, since it is larger than the sum of its proper divisors (81561677).

513112243 is a wasteful number, since it uses less digits than its factorization.

513112243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032497.

The product of its digits is 720, while the sum is 22.

The square root of 513112243 is about 22651.9809950477. The cubic root of 513112243 is about 800.5788742589.

Adding to 513112243 its reverse (342211315), we get a palindrome (855323558).

The spelling of 513112243 in words is "five hundred thirteen million, one hundred twelve thousand, two hundred forty-three".