2043641321 has 2 divisors, whose sum is σ = 2043641322. Its totient is φ = 2043641320.

The previous prime is 2043641297. The next prime is 2043641359. The reversal of 2043641321 is 1231463402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1906282921 + 137358400 = 43661^2 + 11720^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043641321 - 2¹⁰ = 2043640297 is a prime.

It is not a weakly prime, because it can be changed into another prime (2043647321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021820660 + 1021820661.

It is an arithmetic number, because the mean of its divisors is an integer number (1021820661).

Almost surely, 2^2043641321 is an apocalyptic number.

It is an amenable number.

2043641321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043641321 is an equidigital number, since it uses as much as digits as its factorization.

2043641321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2043641321 is about 45206.6512915965. The cubic root of 2043641321 is about 1269.0192939312.

The spelling of 2043641321 in words is "two billion, forty-three million, six hundred forty-one thousand, three hundred twenty-one".