1306977247 has 2 divisors, whose sum is σ = 1306977248. Its totient is φ = 1306977246.

The previous prime is 1306977229. The next prime is 1306977251. The reversal of 1306977247 is 7427796031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1306977247 - 2¹¹ = 1306975199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1306977197 and 1306977206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306977257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653488623 + 653488624.

It is an arithmetic number, because the mean of its divisors is an integer number (653488624).

Almost surely, 2^1306977247 is an apocalyptic number.

1306977247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306977247 is an equidigital number, since it uses as much as digits as its factorization.

1306977247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 46.

The square root of 1306977247 is about 36152.1402824231. The cubic root of 1306977247 is about 1093.3419432716.

The spelling of 1306977247 in words is "one billion, three hundred six million, nine hundred seventy-seven thousand, two hundred forty-seven".