2340161 has 4 divisors (see below), whose sum is σ = 2372292. Its totient is φ = 2308032.

The previous prime is 2340133. The next prime is 2340167. The reversal of 2340161 is 1610432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2016400 + 323761 = 1420^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 2340161 - 2¹⁰ = 2339137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2340167) 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, 15956 + ... + 16101.

It is an arithmetic number, because the mean of its divisors is an integer number (593073).

2^2340161 is an apocalyptic number.

It is an amenable number.

2340161 is a deficient number, since it is larger than the sum of its proper divisors (32131).

2340161 is an equidigital number, since it uses as much as digits as its factorization.

2340161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32130.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2340161 is about 1529.7584776689. The cubic root of 2340161 is about 132.7644841700.

Adding to 2340161 its reverse (1610432), we get a palindrome (3950593).

The spelling of 2340161 in words is "two million, three hundred forty thousand, one hundred sixty-one".