213002305 has 8 divisors (see below), whose sum is σ = 256055400. Its totient is φ = 170100096.

The previous prime is 213002291. The next prime is 213002311. The reversal of 213002305 is 503200312.

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 212955649 = 216^2 + 14593^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 213002305 - 2¹⁹ = 212478017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34590 + ... + 40279.

It is an arithmetic number, because the mean of its divisors is an integer number (32006925).

Almost surely, 2^213002305 is an apocalyptic number.

It is an amenable number.

213002305 is a deficient number, since it is larger than the sum of its proper divisors (43053095).

213002305 is an equidigital number, since it uses as much as digits as its factorization.

213002305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75443.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 213002305 is about 14594.5984871116. The cubic root of 213002305 is about 597.2114162274.

Adding to 213002305 its reverse (503200312), we get a palindrome (716202617).

The spelling of 213002305 in words is "two hundred thirteen million, two thousand, three hundred five".