213079009 has 16 divisors (see below), whose sum is σ = 256443264. Its totient is φ = 174441600.

The previous prime is 213079007. The next prime is 213079019. The reversal of 213079009 is 900970312.

It is a cyclic number.

It is not a de Polignac number, because 213079009 - 2¹ = 213079007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213079001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12309 + ... + 24034.

It is an arithmetic number, because the mean of its divisors is an integer number (16027704).

Almost surely, 2^213079009 is an apocalyptic number.

It is an amenable number.

213079009 is a deficient number, since it is larger than the sum of its proper divisors (43364255).

213079009 is a wasteful number, since it uses less digits than its factorization.

213079009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36408.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 213079009 is about 14597.2260721001. The cubic root of 213079009 is about 597.2830946487.

The spelling of 213079009 in words is "two hundred thirteen million, seventy-nine thousand, nine".