213701489 has 2 divisors, whose sum is σ = 213701490. Its totient is φ = 213701488.

The previous prime is 213701431. The next prime is 213701491. The reversal of 213701489 is 984107312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174451264 + 39250225 = 13208^2 + 6265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213701489 is a prime.

Together with 213701491, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_11794517 and since 213701489 and 11794517 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (213791489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106850744 + 106850745.

It is an arithmetic number, because the mean of its divisors is an integer number (106850745).

Almost surely, 2^213701489 is an apocalyptic number.

It is an amenable number.

213701489 is a deficient number, since it is larger than the sum of its proper divisors (1).

213701489 is an equidigital number, since it uses as much as digits as its factorization.

213701489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 213701489 is about 14618.5323818775. The cubic root of 213701489 is about 597.8641550396.

The spelling of 213701489 in words is "two hundred thirteen million, seven hundred one thousand, four hundred eighty-nine".