1312277 has 2 divisors, whose sum is σ = 1312278. Its totient is φ = 1312276.

The previous prime is 1312237. The next prime is 1312301. The reversal of 1312277 is 7722131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1274641 + 37636 = 1129^2 + 194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312277 is a prime.

It is an Ulam number.

It is equal to p₁₀₀₈₉₅ and since 1312277 and 100895 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656138 + 656139.

It is an arithmetic number, because the mean of its divisors is an integer number (656139).

2^1312277 is an apocalyptic number.

It is an amenable number.

1312277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312277 is an equidigital number, since it uses as much as digits as its factorization.

1312277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588, while the sum is 23.

The square root of 1312277 is about 1145.5465944256. The cubic root of 1312277 is about 109.4817773030.

The spelling of 1312277 in words is "one million, three hundred twelve thousand, two hundred seventy-seven".