213610469 has 2 divisors, whose sum is σ = 213610470. Its totient is φ = 213610468.

The previous prime is 213610427. The next prime is 213610561. The reversal of 213610469 is 964016312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183250369 + 30360100 = 13537^2 + 5510^2 .

It is a cyclic number.

It is not a de Polignac number, because 213610469 - 2²⁰ = 212561893 is a prime.

It is a super-2 number, since 2×213610469² = 91258864932799922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213610409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106805234 + 106805235.

It is an arithmetic number, because the mean of its divisors is an integer number (106805235).

Almost surely, 2^213610469 is an apocalyptic number.

It is an amenable number.

213610469 is a deficient number, since it is larger than the sum of its proper divisors (1).

213610469 is an equidigital number, since it uses as much as digits as its factorization.

213610469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 213610469 is about 14615.4188787048. The cubic root of 213610469 is about 597.7792619747.

The spelling of 213610469 in words is "two hundred thirteen million, six hundred ten thousand, four hundred sixty-nine".