201830215 has 4 divisors (see below), whose sum is σ = 242196264. Its totient is φ = 161464168.

The previous prime is 201830203. The next prime is 201830257. The reversal of 201830215 is 512038102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512038102 = 2 ⋅256019051.

It is a cyclic number.

It is not a de Polignac number, because 201830215 - 2⁵ = 201830183 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 20183017 + ... + 20183026.

It is an arithmetic number, because the mean of its divisors is an integer number (60549066).

Almost surely, 2^201830215 is an apocalyptic number.

201830215 is a deficient number, since it is larger than the sum of its proper divisors (40366049).

201830215 is an equidigital number, since it uses as much as digits as its factorization.

201830215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40366048.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 201830215 is about 14206.6961324581. The cubic root of 201830215 is about 586.5819941003.

Adding to 201830215 its reverse (512038102), we get a palindrome (713868317).

The spelling of 201830215 in words is "two hundred one million, eight hundred thirty thousand, two hundred fifteen".