230905213 has 16 divisors (see below), whose sum is σ = 288299520. Its totient is φ = 179665200.

The previous prime is 230905201. The next prime is 230905223. The reversal of 230905213 is 312509032.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-230905213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230905223) by changing a digit.

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, 64398 + ... + 67888.

It is an arithmetic number, because the mean of its divisors is an integer number (18018720).

Almost surely, 2^230905213 is an apocalyptic number.

It is an amenable number.

230905213 is a deficient number, since it is larger than the sum of its proper divisors (57394307).

230905213 is a wasteful number, since it uses less digits than its factorization.

230905213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 230905213 is about 15195.5655702577. The cubic root of 230905213 is about 613.4953084792.

The spelling of 230905213 in words is "two hundred thirty million, nine hundred five thousand, two hundred thirteen".