512311399 has 4 divisors (see below), whose sum is σ = 517099464. Its totient is φ = 507523336.

The previous prime is 512311381. The next prime is 512311427. The reversal of 512311399 is 993113215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993113215 = 5 ⋅198622643.

It is a cyclic number.

It is not a de Polignac number, because 512311399 - 2¹¹ = 512309351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512311339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2393872 + ... + 2394085.

It is an arithmetic number, because the mean of its divisors is an integer number (129274866).

Almost surely, 2^512311399 is an apocalyptic number.

512311399 is a deficient number, since it is larger than the sum of its proper divisors (4788065).

512311399 is a wasteful number, since it uses less digits than its factorization.

512311399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788064.

The product of its digits is 7290, while the sum is 34.

The square root of 512311399 is about 22634.2969627952. The cubic root of 512311399 is about 800.1621541095.

The spelling of 512311399 in words is "five hundred twelve million, three hundred eleven thousand, three hundred ninety-nine".