513312349 has 4 divisors (see below), whose sum is σ = 559977120. Its totient is φ = 466647580.

The previous prime is 513312343. The next prime is 513312389. The reversal of 513312349 is 943213315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 513312349 - 2¹⁵ = 513279581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513312349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513312343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23332369 + ... + 23332390.

It is an arithmetic number, because the mean of its divisors is an integer number (139994280).

Almost surely, 2^513312349 is an apocalyptic number.

It is an amenable number.

513312349 is a deficient number, since it is larger than the sum of its proper divisors (46664771).

513312349 is a wasteful number, since it uses less digits than its factorization.

513312349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46664770.

The product of its digits is 9720, while the sum is 31.

The square root of 513312349 is about 22656.3975291748. The cubic root of 513312349 is about 800.6829319432.

It can be divided in two parts, 51 and 3312349, that added together give a square (3312400 = 1820²).

The spelling of 513312349 in words is "five hundred thirteen million, three hundred twelve thousand, three hundred forty-nine".