2043421401313 has 2 divisors, whose sum is σ = 2043421401314. Its totient is φ = 2043421401312.

The previous prime is 2043421401311. The next prime is 2043421401337. The reversal of 2043421401313 is 3131041243402.

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., 1606563855009 + 436857546304 = 1267503^2 + 660952^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043421401313 - 2¹ = 2043421401311 is a prime.

Together with 2043421401311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2043421401311) 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, 1021710700656 + 1021710700657.

It is an arithmetic number, because the mean of its divisors is an integer number (1021710700657).

Almost surely, 2^{2043421401313} is an apocalyptic number.

It is an amenable number.

2043421401313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043421401313 is an equidigital number, since it uses as much as digits as its factorization.

2043421401313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 2043421401313 its reverse (3131041243402), we get a palindrome (5174462644715).

The spelling of 2043421401313 in words is "two trillion, forty-three billion, four hundred twenty-one million, four hundred one thousand, three hundred thirteen".