201430505 has 8 divisors (see below), whose sum is σ = 242215872. Its totient is φ = 160811568.

The previous prime is 201430477. The next prime is 201430511. The reversal of 201430505 is 505034102.

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 201430505 - 2⁶ = 201430441 is a prime.

It is a Duffinian number.

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, 38927 + ... + 43796.

It is an arithmetic number, because the mean of its divisors is an integer number (30276984).

Almost surely, 2^201430505 is an apocalyptic number.

It is an amenable number.

201430505 is a deficient number, since it is larger than the sum of its proper divisors (40785367).

201430505 is an equidigital number, since it uses as much as digits as its factorization.

201430505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83215.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 201430505 is about 14192.6214985111. The cubic root of 201430505 is about 586.1945105940.

Adding to 201430505 its reverse (505034102), we get a palindrome (706464607).

The spelling of 201430505 in words is "two hundred one million, four hundred thirty thousand, five hundred five".