1047771271 has 2 divisors, whose sum is σ = 1047771272. Its totient is φ = 1047771270.

The previous prime is 1047771269. The next prime is 1047771281. The reversal of 1047771271 is 1721777401.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1047771271 - 2¹ = 1047771269 is a prime.

Together with 1047771269, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1047771271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1047771281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523885635 + 523885636.

It is an arithmetic number, because the mean of its divisors is an integer number (523885636).

Almost surely, 2^1047771271 is an apocalyptic number.

1047771271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047771271 is an equidigital number, since it uses as much as digits as its factorization.

1047771271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19208, while the sum is 37.

The square root of 1047771271 is about 32369.2951884961. The cubic root of 1047771271 is about 1015.6767134233.

The spelling of 1047771271 in words is "one billion, forty-seven million, seven hundred seventy-one thousand, two hundred seventy-one".