213018 has 16 divisors (see below), whose sum is σ = 458976. Its totient is φ = 65520.

The previous prime is 212999. The next prime is 213019. The reversal of 213018 is 810312.

It is a happy number.

It is an Ulam number.

It is a nialpdrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 212988 and 213006.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 213018.

It is not an unprimeable number, because it can be changed into a prime (213019) 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, 1288 + ... + 1443.

It is an arithmetic number, because the mean of its divisors is an integer number (28686).

2²¹³⁰¹⁸ is an apocalyptic number.

213018 is an abundant number, since it is smaller than the sum of its proper divisors (245958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213018 is a wasteful number, since it uses less digits than its factorization.

213018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 213018 is about 461.5387307692. The cubic root of 213018 is about 59.7226084305.

The spelling of 213018 in words is "two hundred thirteen thousand, eighteen".