1277341263 has 12 divisors (see below), whose sum is σ = 2012780328. Its totient is φ = 774146160.

The previous prime is 1277341229. The next prime is 1277341277. The reversal of 1277341263 is 3621437721.

It is not a de Polignac number, because 1277341263 - 2¹⁴ = 1277324879 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1277340263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6451120 + ... + 6451317.

It is an arithmetic number, because the mean of its divisors is an integer number (167731694).

Almost surely, 2^1277341263 is an apocalyptic number.

1277341263 is a deficient number, since it is larger than the sum of its proper divisors (735439065).

1277341263 is a wasteful number, since it uses less digits than its factorization.

1277341263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12902454 (or 12902451 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 1277341263 is about 35739.9113457210. The cubic root of 1277341263 is about 1085.0147627657.

Adding to 1277341263 its reverse (3621437721), we get a palindrome (4898778984).

The spelling of 1277341263 in words is "one billion, two hundred seventy-seven million, three hundred forty-one thousand, two hundred sixty-three".