127712631 has 8 divisors (see below), whose sum is σ = 170573040. Its totient is φ = 84996992.

The previous prime is 127712621. The next prime is 127712647. The reversal of 127712631 is 136217721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127712631 - 2⁷ = 127712503 is a prime.

It is a super-2 number, since 2×127712631² = 32621032233884322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127712621) 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 in 7 ways as a sum of consecutive naturals, for example, 34116 + ... + 37673.

It is an arithmetic number, because the mean of its divisors is an integer number (21321630).

Almost surely, 2^127712631 is an apocalyptic number.

127712631 is a deficient number, since it is larger than the sum of its proper divisors (42860409).

127712631 is an equidigital number, since it uses as much as digits as its factorization.

127712631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72385.

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

The square root of 127712631 is about 11301.0013273161. The cubic root of 127712631 is about 503.5909891846.

Subtracting from 127712631 its sum of digits (30), we obtain a square (127712601 = 11301²).

The spelling of 127712631 in words is "one hundred twenty-seven million, seven hundred twelve thousand, six hundred thirty-one".