201513105 has 12 divisors (see below), whose sum is σ = 349289460. Its totient is φ = 107473632.

The previous prime is 201513101. The next prime is 201513119. The reversal of 201513105 is 501315102.

It can be written as a sum of positive squares in 2 ways, for example, as 131606784 + 69906321 = 11472^2 + 8361^2 .

It is not a de Polignac number, because 201513105 - 2² = 201513101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201513101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2238990 + ... + 2239079.

It is an arithmetic number, because the mean of its divisors is an integer number (29107455).

Almost surely, 2^201513105 is an apocalyptic number.

It is an amenable number.

201513105 is a deficient number, since it is larger than the sum of its proper divisors (147776355).

201513105 is a wasteful number, since it uses less digits than its factorization.

201513105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4478080 (or 4478077 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 201513105 is about 14195.5311630104. The cubic root of 201513105 is about 586.2746259828.

Adding to 201513105 its reverse (501315102), we get a palindrome (702828207).

The spelling of 201513105 in words is "two hundred one million, five hundred thirteen thousand, one hundred five".