213000155 has 16 divisors (see below), whose sum is σ = 258163200. Its totient is φ = 168701280.

The previous prime is 213000149. The next prime is 213000167. The reversal of 213000155 is 551000312.

It is not a de Polignac number, because 213000155 - 2¹⁰ = 212999131 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295886 + ... + 296604.

It is an arithmetic number, because the mean of its divisors is an integer number (16135200).

Almost surely, 2^213000155 is an apocalyptic number.

213000155 is a deficient number, since it is larger than the sum of its proper divisors (45163045).

213000155 is a wasteful number, since it uses less digits than its factorization.

213000155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 213000155 is about 14594.5248295380. The cubic root of 213000155 is about 597.2094068456.

Adding to 213000155 its reverse (551000312), we get a palindrome (764000467).

The spelling of 213000155 in words is "two hundred thirteen million, one hundred fifty-five", and thus it is an aban number.