2045323321 has 2 divisors, whose sum is σ = 2045323322. Its totient is φ = 2045323320.

The previous prime is 2045323307. The next prime is 2045323327. The reversal of 2045323321 is 1233235402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1895383296 + 149940025 = 43536^2 + 12245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045323321 - 2¹⁹ = 2044799033 is a prime.

It is not a weakly prime, because it can be changed into another prime (2045323327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022661660 + 1022661661.

It is an arithmetic number, because the mean of its divisors is an integer number (1022661661).

Almost surely, 2^2045323321 is an apocalyptic number.

It is an amenable number.

2045323321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045323321 is an equidigital number, since it uses as much as digits as its factorization.

2045323321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 2045323321 is about 45225.2509224659. The cubic root of 2045323321 is about 1269.3673499733.

Adding to 2045323321 its reverse (1233235402), we get a palindrome (3278558723).

The spelling of 2045323321 in words is "two billion, forty-five million, three hundred twenty-three thousand, three hundred twenty-one".