213127489 has 2 divisors, whose sum is σ = 213127490. Its totient is φ = 213127488.

The previous prime is 213127477. The next prime is 213127517. The reversal of 213127489 is 984721312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164685889 + 48441600 = 12833^2 + 6960^2 .

It is a cyclic number.

It is not a de Polignac number, because 213127489 - 2⁵ = 213127457 is a prime.

It is not a weakly prime, because it can be changed into another prime (213127429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106563744 + 106563745.

It is an arithmetic number, because the mean of its divisors is an integer number (106563745).

Almost surely, 2^213127489 is an apocalyptic number.

It is an amenable number.

213127489 is a deficient number, since it is larger than the sum of its proper divisors (1).

213127489 is an equidigital number, since it uses as much as digits as its factorization.

213127489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 213127489 is about 14598.8865671324. The cubic root of 213127489 is about 597.3283894102.

The spelling of 213127489 in words is "two hundred thirteen million, one hundred twenty-seven thousand, four hundred eighty-nine".