1313078461 has 2 divisors, whose sum is σ = 1313078462. Its totient is φ = 1313078460.

The previous prime is 1313078383. The next prime is 1313078471. The reversal of 1313078461 is 1648703131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767622436 + 545456025 = 27706^2 + 23355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313078461 - 2¹⁵ = 1313045693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313078471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656539230 + 656539231.

It is an arithmetic number, because the mean of its divisors is an integer number (656539231).

Almost surely, 2^1313078461 is an apocalyptic number.

It is an amenable number.

1313078461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313078461 is an equidigital number, since it uses as much as digits as its factorization.

1313078461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1313078461 is about 36236.4245062892. The cubic root of 1313078461 is about 1095.0406109359.

The spelling of 1313078461 in words is "one billion, three hundred thirteen million, seventy-eight thousand, four hundred sixty-one".