210312449 has 2 divisors, whose sum is σ = 210312450. Its totient is φ = 210312448.

The previous prime is 210312419. The next prime is 210312469. The reversal of 210312449 is 944213012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205406224 + 4906225 = 14332^2 + 2215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210312449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210312409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105156224 + 105156225.

It is an arithmetic number, because the mean of its divisors is an integer number (105156225).

Almost surely, 2^210312449 is an apocalyptic number.

It is an amenable number.

210312449 is a deficient number, since it is larger than the sum of its proper divisors (1).

210312449 is an equidigital number, since it uses as much as digits as its factorization.

210312449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 210312449 is about 14502.1532539137. The cubic root of 210312449 is about 594.6868384770.

The spelling of 210312449 in words is "two hundred ten million, three hundred twelve thousand, four hundred forty-nine".