1423403221813 has 2 divisors, whose sum is σ = 1423403221814. Its totient is φ = 1423403221812.

The previous prime is 1423403221759. The next prime is 1423403221841. The reversal of 1423403221813 is 3181223043241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1420477818244 + 2925403569 = 1191838^2 + 54087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423403221813 - 2²¹ = 1423401124661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423403225813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711701610906 + 711701610907.

It is an arithmetic number, because the mean of its divisors is an integer number (711701610907).

Almost surely, 2^{1423403221813} is an apocalyptic number.

It is an amenable number.

1423403221813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423403221813 is an equidigital number, since it uses as much as digits as its factorization.

1423403221813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 1423403221813 in words is "one trillion, four hundred twenty-three billion, four hundred three million, two hundred twenty-one thousand, eight hundred thirteen".