127981351 has 2 divisors, whose sum is σ = 127981352. Its totient is φ = 127981350.

The previous prime is 127981349. The next prime is 127981391. The reversal of 127981351 is 153189721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127981351 - 2¹ = 127981349 is a prime.

Together with 127981349, it forms a pair of twin primes.

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 127981351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127981391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63990675 + 63990676.

It is an arithmetic number, because the mean of its divisors is an integer number (63990676).

Almost surely, 2^127981351 is an apocalyptic number.

127981351 is a deficient number, since it is larger than the sum of its proper divisors (1).

127981351 is an equidigital number, since it uses as much as digits as its factorization.

127981351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 37.

The square root of 127981351 is about 11312.8842918152. The cubic root of 127981351 is about 503.9439434904.

The spelling of 127981351 in words is "one hundred twenty-seven million, nine hundred eighty-one thousand, three hundred fifty-one".