133613005 has 16 divisors (see below), whose sum is σ = 166255920. Its totient is φ = 102961152.

The previous prime is 133612991. The next prime is 133613023. The reversal of 133613005 is 500316331.

It can be written as a sum of positive squares in 8 ways, for example, as 2304324 + 131308681 = 1518^2 + 11459^2 .

It is a cyclic number.

It is not a de Polignac number, because 133613005 - 2¹¹ = 133610957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82867 + ... + 84463.

It is an arithmetic number, because the mean of its divisors is an integer number (10390995).

Almost surely, 2^133613005 is an apocalyptic number.

It is an amenable number.

133613005 is a deficient number, since it is larger than the sum of its proper divisors (32642915).

133613005 is a wasteful number, since it uses less digits than its factorization.

133613005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 133613005 is about 11559.1091784791. The cubic root of 133613005 is about 511.2298972055.

Adding to 133613005 its reverse (500316331), we get a palindrome (633929336).

It can be divided in two parts, 1336 and 13005, that added together give a palindrome (14341).

The spelling of 133613005 in words is "one hundred thirty-three million, six hundred thirteen thousand, five".