2143213249 has 2 divisors, whose sum is σ = 2143213250. Its totient is φ = 2143213248.

The previous prime is 2143213211. The next prime is 2143213283. The reversal of 2143213249 is 9423123412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1213268224 + 929945025 = 34832^2 + 30495^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143213249 - 2¹¹ = 2143211201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2143213249.

It is not a weakly prime, because it can be changed into another prime (2143213549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071606624 + 1071606625.

It is an arithmetic number, because the mean of its divisors is an integer number (1071606625).

Almost surely, 2^2143213249 is an apocalyptic number.

It is an amenable number.

2143213249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143213249 is an equidigital number, since it uses as much as digits as its factorization.

2143213249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 2143213249 is about 46294.8512147949. The cubic root of 2143213249 is about 1289.3034015229.

The spelling of 2143213249 in words is "two billion, one hundred forty-three million, two hundred thirteen thousand, two hundred forty-nine".