2117361 has 4 divisors (see below), whose sum is σ = 2823152. Its totient is φ = 1411572.

The previous prime is 2117351. The next prime is 2117369. The reversal of 2117361 is 1637112.

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 not a de Polignac number, because 2117361 - 2⁷ = 2117233 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2117369) 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, 352891 + ... + 352896.

It is an arithmetic number, because the mean of its divisors is an integer number (705788).

2^2117361 is an apocalyptic number.

It is an amenable number.

2117361 is a deficient number, since it is larger than the sum of its proper divisors (705791).

2117361 is an equidigital number, since it uses as much as digits as its factorization.

2117361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705790.

The product of its digits is 252, while the sum is 21.

The square root of 2117361 is about 1455.1154593365. The cubic root of 2117361 is about 128.4098395037.

Subtracting from 2117361 its reverse (1637112), we obtain a square (480249 = 693²).

The spelling of 2117361 in words is "two million, one hundred seventeen thousand, three hundred sixty-one".