213099 has 8 divisors (see below), whose sum is σ = 286272. Its totient is φ = 141000.

The previous prime is 213097. The next prime is 213119. The reversal of 213099 is 990312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213099 - 2¹ = 213097 is a prime.

It is a super-2 number, since 2×213099² = 90822367602, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612 + ... + 894.

It is an arithmetic number, because the mean of its divisors is an integer number (35784).

2²¹³⁰⁹⁹ is an apocalyptic number.

213099 is a deficient number, since it is larger than the sum of its proper divisors (73173).

213099 is a wasteful number, since it uses less digits than its factorization.

213099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 213099 is about 461.6264723778. The cubic root of 213099 is about 59.7301773030.

The spelling of 213099 in words is "two hundred thirteen thousand, ninety-nine".