1279311463 has 2 divisors, whose sum is σ = 1279311464. Its totient is φ = 1279311462.

The previous prime is 1279311461. The next prime is 1279311469. The reversal of 1279311463 is 3641139721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1279311463 - 2¹ = 1279311461 is a prime.

Together with 1279311461, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1279311461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639655731 + 639655732.

It is an arithmetic number, because the mean of its divisors is an integer number (639655732).

Almost surely, 2^1279311463 is an apocalyptic number.

1279311463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279311463 is an equidigital number, since it uses as much as digits as its factorization.

1279311463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 1279311463 is about 35767.4637484963. The cubic root of 1279311463 is about 1085.5723266190.

The spelling of 1279311463 in words is "one billion, two hundred seventy-nine million, three hundred eleven thousand, four hundred sixty-three".