516331 has 4 divisors (see below), whose sum is σ = 521752. Its totient is φ = 510912.

The previous prime is 516323. The next prime is 516349. The reversal of 516331 is 133615.

516331 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133615 = 5 ⋅26723.

It is a cyclic number.

It is not a de Polignac number, because 516331 - 2³ = 516323 is a prime.

It is a super-2 number, since 2×516331² = 533195403122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 516299 and 516308.

It is not an unprimeable number, because it can be changed into a prime (516361) 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, 2565 + ... + 2758.

It is an arithmetic number, because the mean of its divisors is an integer number (130438).

2⁵¹⁶³³¹ is an apocalyptic number.

516331 is a deficient number, since it is larger than the sum of its proper divisors (5421).

516331 is an equidigital number, since it uses as much as digits as its factorization.

516331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5420.

The product of its digits is 270, while the sum is 19.

The square root of 516331 is about 718.5617579582. The cubic root of 516331 is about 80.2249398497.

Adding to 516331 its reverse (133615), we get a palindrome (649946).

The spelling of 516331 in words is "five hundred sixteen thousand, three hundred thirty-one".