1313550361 has 2 divisors, whose sum is σ = 1313550362. Its totient is φ = 1313550360.

The previous prime is 1313550353. The next prime is 1313550367. The reversal of 1313550361 is 1630553131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 996033600 + 317516761 = 31560^2 + 17819^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313550361 - 2³ = 1313550353 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313550367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656775180 + 656775181.

It is an arithmetic number, because the mean of its divisors is an integer number (656775181).

Almost surely, 2^1313550361 is an apocalyptic number.

It is an amenable number.

1313550361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313550361 is an equidigital number, since it uses as much as digits as its factorization.

1313550361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 1313550361 is about 36242.9353253844. The cubic root of 1313550361 is about 1095.1717754189.

The spelling of 1313550361 in words is "one billion, three hundred thirteen million, five hundred fifty thousand, three hundred sixty-one".