516342331 has 2 divisors, whose sum is σ = 516342332. Its totient is φ = 516342330.

The previous prime is 516342287. The next prime is 516342353. The reversal of 516342331 is 133243615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516342331 is a prime.

It is a super-2 number, since 2×516342331² = 533218805565027122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 516342331.

It is not a weakly prime, because it can be changed into another prime (516342371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258171165 + 258171166.

It is an arithmetic number, because the mean of its divisors is an integer number (258171166).

Almost surely, 2^516342331 is an apocalyptic number.

516342331 is a deficient number, since it is larger than the sum of its proper divisors (1).

516342331 is an equidigital number, since it uses as much as digits as its factorization.

516342331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 516342331 is about 22723.1672748321. The cubic root of 516342331 is about 802.2552669684.

Adding to 516342331 its reverse (133243615), we get a palindrome (649585946).

The spelling of 516342331 in words is "five hundred sixteen million, three hundred forty-two thousand, three hundred thirty-one".