213355009 has 16 divisors (see below), whose sum is σ = 257084800. Its totient is φ = 172969344.

The previous prime is 213354991. The next prime is 213355013. The reversal of 213355009 is 900553312.

It is a cyclic number.

It is not a de Polignac number, because 213355009 - 2¹³ = 213346817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213355039) 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, 131797 + ... + 133405.

It is an arithmetic number, because the mean of its divisors is an integer number (16067800).

Almost surely, 2^213355009 is an apocalyptic number.

It is an amenable number.

213355009 is a deficient number, since it is larger than the sum of its proper divisors (43729791).

213355009 is a wasteful number, since it uses less digits than its factorization.

213355009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 213355009 is about 14606.6768636812. The cubic root of 213355009 is about 597.5408691547.

The spelling of 213355009 in words is "two hundred thirteen million, three hundred fifty-five thousand, nine".