127716231 has 4 divisors (see below), whose sum is σ = 170288312. Its totient is φ = 85144152.

The previous prime is 127716229. The next prime is 127716269. The reversal of 127716231 is 132617721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 127716231 - 2¹ = 127716229 is a prime.

It is a super-2 number, since 2×127716231² = 32622871321690722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127716221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21286036 + ... + 21286041.

It is an arithmetic number, because the mean of its divisors is an integer number (42572078).

Almost surely, 2^127716231 is an apocalyptic number.

127716231 is a deficient number, since it is larger than the sum of its proper divisors (42572081).

127716231 is an equidigital number, since it uses as much as digits as its factorization.

127716231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42572080.

The product of its digits is 3528, while the sum is 30.

The square root of 127716231 is about 11301.1606041150. The cubic root of 127716231 is about 503.5957209289.

The spelling of 127716231 in words is "one hundred twenty-seven million, seven hundred sixteen thousand, two hundred thirty-one".