201145305 has 32 divisors (see below), whose sum is σ = 350467200. Its totient is φ = 98122752.

The previous prime is 201145279. The next prime is 201145361. The reversal of 201145305 is 503541102.

It is not a de Polignac number, because 201145305 - 2⁷ = 201145177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3904 + ... + 20433.

It is an arithmetic number, because the mean of its divisors is an integer number (10952100).

Almost surely, 2^201145305 is an apocalyptic number.

It is an amenable number.

201145305 is a deficient number, since it is larger than the sum of its proper divisors (149321895).

201145305 is a wasteful number, since it uses less digits than its factorization.

201145305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24393.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 201145305 is about 14182.5704651872. The cubic root of 201145305 is about 585.9177209395.

Adding to 201145305 its reverse (503541102), we get a palindrome (704686407).

The spelling of 201145305 in words is "two hundred one million, one hundred forty-five thousand, three hundred five".