213110449 has 2 divisors, whose sum is σ = 213110450. Its totient is φ = 213110448.

The previous prime is 213110437. The next prime is 213110459. The reversal of 213110449 is 944011312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183331600 + 29778849 = 13540^2 + 5457^2 .

It is a cyclic number.

It is not a de Polignac number, because 213110449 - 2¹⁹ = 212586161 is a prime.

It is not a weakly prime, because it can be changed into another prime (213110459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555224 + 106555225.

It is an arithmetic number, because the mean of its divisors is an integer number (106555225).

Almost surely, 2^213110449 is an apocalyptic number.

It is an amenable number.

213110449 is a deficient number, since it is larger than the sum of its proper divisors (1).

213110449 is an equidigital number, since it uses as much as digits as its factorization.

213110449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 213110449 is about 14598.3029493157. The cubic root of 213110449 is about 597.3124697571.

The spelling of 213110449 in words is "two hundred thirteen million, one hundred ten thousand, four hundred forty-nine".