516431 has 2 divisors, whose sum is σ = 516432. Its totient is φ = 516430.

The previous prime is 516421. The next prime is 516433. The reversal of 516431 is 134615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516431 is a prime.

It is a super-2 number, since 2×516431² = 533401955522, which contains 22 as substring.

Together with 516433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258215 + 258216.

It is an arithmetic number, because the mean of its divisors is an integer number (258216).

2⁵¹⁶⁴³¹ is an apocalyptic number.

516431 is a deficient number, since it is larger than the sum of its proper divisors (1).

516431 is an equidigital number, since it uses as much as digits as its factorization.

516431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 516431 is about 718.6313380308. The cubic root of 516431 is about 80.2301186827.

The spelling of 516431 in words is "five hundred sixteen thousand, four hundred thirty-one".