543311231 has 2 divisors, whose sum is σ = 543311232. Its totient is φ = 543311230.

The previous prime is 543311189. The next prime is 543311233. The reversal of 543311231 is 132113345.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 543311231 - 2²² = 539116927 is a prime.

It is a super-2 number, since 2×543311231² = 590374187461470722, which contains 22 as substring.

Together with 543311233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 543311197 and 543311206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543311233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271655615 + 271655616.

It is an arithmetic number, because the mean of its divisors is an integer number (271655616).

Almost surely, 2^543311231 is an apocalyptic number.

543311231 is a deficient number, since it is larger than the sum of its proper divisors (1).

543311231 is an equidigital number, since it uses as much as digits as its factorization.

543311231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 543311231 is about 23309.0375391177. The cubic root of 543311231 is about 815.9863506744.

Adding to 543311231 its reverse (132113345), we get a palindrome (675424576).

The spelling of 543311231 in words is "five hundred forty-three million, three hundred eleven thousand, two hundred thirty-one".