127712231 has 2 divisors, whose sum is σ = 127712232. Its totient is φ = 127712230.

The previous prime is 127712161. The next prime is 127712267. The reversal of 127712231 is 132217721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127712231 - 2¹⁸ = 127450087 is a prime.

It is a super-2 number, since 2×127712231² = 32620827893994722, 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 127712231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127712731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63856115 + 63856116.

It is an arithmetic number, because the mean of its divisors is an integer number (63856116).

Almost surely, 2^127712231 is an apocalyptic number.

127712231 is a deficient number, since it is larger than the sum of its proper divisors (1).

127712231 is an equidigital number, since it uses as much as digits as its factorization.

127712231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 26.

The square root of 127712231 is about 11300.9836297554. The cubic root of 127712231 is about 503.5904634298.

Adding to 127712231 its reverse (132217721), we get a palindrome (259929952).

The spelling of 127712231 in words is "one hundred twenty-seven million, seven hundred twelve thousand, two hundred thirty-one".