134543231 has 2 divisors, whose sum is σ = 134543232. Its totient is φ = 134543230.

The previous prime is 134543221. The next prime is 134543257. The reversal of 134543231 is 132345431.

It is an a-pointer prime, because the next prime (134543257) can be obtained adding 134543231 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134543231 is a prime.

It is a super-2 number, since 2×134543231² = 36203762015838722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134543231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134543221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67271615 + 67271616.

It is an arithmetic number, because the mean of its divisors is an integer number (67271616).

Almost surely, 2^134543231 is an apocalyptic number.

134543231 is a deficient number, since it is larger than the sum of its proper divisors (1).

134543231 is an equidigital number, since it uses as much as digits as its factorization.

134543231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 26.

The square root of 134543231 is about 11599.2771757554. The cubic root of 134543231 is about 512.4135643245.

Adding to 134543231 its reverse (132345431), we get a palindrome (266888662).

The spelling of 134543231 in words is "one hundred thirty-four million, five hundred forty-three thousand, two hundred thirty-one".