2145304223 has 2 divisors, whose sum is σ = 2145304224. Its totient is φ = 2145304222.

The previous prime is 2145304219. The next prime is 2145304229. The reversal of 2145304223 is 3224035412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145304223 - 2² = 2145304219 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145304192 and 2145304201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145304229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072652111 + 1072652112.

It is an arithmetic number, because the mean of its divisors is an integer number (1072652112).

Almost surely, 2^2145304223 is an apocalyptic number.

2145304223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145304223 is an equidigital number, since it uses as much as digits as its factorization.

2145304223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 2145304223 is about 46317.4289333940. The cubic root of 2145304223 is about 1289.7225577652.

Adding to 2145304223 its reverse (3224035412), we get a palindrome (5369339635).

The spelling of 2145304223 in words is "two billion, one hundred forty-five million, three hundred four thousand, two hundred twenty-three".