1223336305813 has 2 divisors, whose sum is σ = 1223336305814. Its totient is φ = 1223336305812.

The previous prime is 1223336305777. The next prime is 1223336305817. The reversal of 1223336305813 is 3185036333221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1192424688324 + 30911617489 = 1091982^2 + 175817^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223336305813 - 2¹⁷ = 1223336174741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223336305817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611668152906 + 611668152907.

It is an arithmetic number, because the mean of its divisors is an integer number (611668152907).

Almost surely, 2^{1223336305813} is an apocalyptic number.

It is an amenable number.

1223336305813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223336305813 is an equidigital number, since it uses as much as digits as its factorization.

1223336305813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 1223336305813 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-six million, three hundred five thousand, eight hundred thirteen".