2145351223 has 2 divisors, whose sum is σ = 2145351224. Its totient is φ = 2145351222.

The previous prime is 2145351209. The next prime is 2145351283. The reversal of 2145351223 is 3221535412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145351223 - 2²⁹ = 1608480311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145351191 and 2145351200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145351283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072675611 + 1072675612.

It is an arithmetic number, because the mean of its divisors is an integer number (1072675612).

Almost surely, 2^2145351223 is an apocalyptic number.

2145351223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145351223 is an equidigital number, since it uses as much as digits as its factorization.

2145351223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 2145351223 is about 46317.9362990192. The cubic root of 2145351223 is about 1289.7319762456.

Adding to 2145351223 its reverse (3221535412), we get a palindrome (5366886635).

The spelling of 2145351223 in words is "two billion, one hundred forty-five million, three hundred fifty-one thousand, two hundred twenty-three".