211312430489 has 2 divisors, whose sum is σ = 211312430490. Its totient is φ = 211312430488.

The previous prime is 211312430449. The next prime is 211312430501. The reversal of 211312430489 is 984034213112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125936265625 + 85376164864 = 354875^2 + 292192^2 .

It is a cyclic number.

It is not a de Polignac number, because 211312430489 - 2¹⁶ = 211312364953 is a prime.

It is not a weakly prime, because it can be changed into another prime (211312430449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105656215244 + 105656215245.

It is an arithmetic number, because the mean of its divisors is an integer number (105656215245).

Almost surely, 2^211312430489 is an apocalyptic number.

It is an amenable number.

211312430489 is a deficient number, since it is larger than the sum of its proper divisors (1).

211312430489 is an equidigital number, since it uses as much as digits as its factorization.

211312430489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 211312430489 in words is "two hundred eleven billion, three hundred twelve million, four hundred thirty thousand, four hundred eighty-nine".