1213550341 has 2 divisors, whose sum is σ = 1213550342. Its totient is φ = 1213550340.

The previous prime is 1213550339. The next prime is 1213550347. The reversal of 1213550341 is 1430553121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711342241 + 502208100 = 26671^2 + 22410^2 .

It is an emirp because it is prime and its reverse (1430553121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213550341 - 2¹ = 1213550339 is a prime.

Together with 1213550339, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213550347) 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, 606775170 + 606775171.

It is an arithmetic number, because the mean of its divisors is an integer number (606775171).

Almost surely, 2^1213550341 is an apocalyptic number.

It is an amenable number.

1213550341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213550341 is an equidigital number, since it uses as much as digits as its factorization.

1213550341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1213550341 is about 34836.0494459403. The cubic root of 1213550341 is about 1066.6434370701.

The spelling of 1213550341 in words is "one billion, two hundred thirteen million, five hundred fifty thousand, three hundred forty-one".