213579913 has 2 divisors, whose sum is σ = 213579914. Its totient is φ = 213579912.

The previous prime is 213579901. The next prime is 213579937. The reversal of 213579913 is 319975312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162486009 + 51093904 = 12747^2 + 7148^2 .

It is a cyclic number.

It is not a de Polignac number, because 213579913 - 2⁵ = 213579881 is a prime.

It is not a weakly prime, because it can be changed into another prime (213579013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106789956 + 106789957.

It is an arithmetic number, because the mean of its divisors is an integer number (106789957).

Almost surely, 2^213579913 is an apocalyptic number.

It is an amenable number.

213579913 is a deficient number, since it is larger than the sum of its proper divisors (1).

213579913 is an equidigital number, since it uses as much as digits as its factorization.

213579913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 40.

The square root of 213579913 is about 14614.3735069280. The cubic root of 213579913 is about 597.7507574196.

The spelling of 213579913 in words is "two hundred thirteen million, five hundred seventy-nine thousand, nine hundred thirteen".