213024145 has 4 divisors (see below), whose sum is σ = 255628980. Its totient is φ = 170419312.

The previous prime is 213024121. The next prime is 213024179. The reversal of 213024145 is 541420312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115863696 + 97160449 = 10764^2 + 9857^2 .

It is a cyclic number.

It is not a de Polignac number, because 213024145 - 2¹¹ = 213022097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21302410 + ... + 21302419.

It is an arithmetic number, because the mean of its divisors is an integer number (63907245).

Almost surely, 2^213024145 is an apocalyptic number.

It is an amenable number.

213024145 is a deficient number, since it is larger than the sum of its proper divisors (42604835).

213024145 is an equidigital number, since it uses as much as digits as its factorization.

213024145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42604834.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 213024145 is about 14595.3466899557. The cubic root of 213024145 is about 597.2318270418.

Adding to 213024145 its reverse (541420312), we get a palindrome (754444457).

The spelling of 213024145 in words is "two hundred thirteen million, twenty-four thousand, one hundred forty-five".