2161013 has 4 divisors (see below), whose sum is σ = 2207040. Its totient is φ = 2114988.

The previous prime is 2161007. The next prime is 2161031. The reversal of 2161013 is 3101612.

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.

It is a cyclic number.

It is not a de Polignac number, because 2161013 - 2⁴ = 2160997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161213) 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, 22943 + ... + 23036.

It is an arithmetic number, because the mean of its divisors is an integer number (551760).

2^2161013 is an apocalyptic number.

It is an amenable number.

2161013 is a deficient number, since it is larger than the sum of its proper divisors (46027).

2161013 is an equidigital number, since it uses as much as digits as its factorization.

2161013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46026.

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

The square root of 2161013 is about 1470.0384348717. The cubic root of 2161013 is about 129.2862860432.

Adding to 2161013 its reverse (3101612), we get a palindrome (5262625).

The spelling of 2161013 in words is "two million, one hundred sixty-one thousand, thirteen".