2013161 has 4 divisors (see below), whose sum is σ = 2016000. Its totient is φ = 2010324.

The previous prime is 2013127. The next prime is 2013163. The reversal of 2013161 is 1613102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2013161 - 2¹⁴ = 1996777 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680 + ... + 2118.

It is an arithmetic number, because the mean of its divisors is an integer number (504000).

2^2013161 is an apocalyptic number.

It is an amenable number.

2013161 is a deficient number, since it is larger than the sum of its proper divisors (2839).

2013161 is a wasteful number, since it uses less digits than its factorization.

2013161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2013161 is about 1418.8590486726. The cubic root of 2013161 is about 126.2678646745.

Adding to 2013161 its reverse (1613102), we get a palindrome (3626263).

The spelling of 2013161 in words is "two million, thirteen thousand, one hundred sixty-one".