2311345 has 8 divisors (see below), whose sum is σ = 2799720. Its totient is φ = 1831680.

The previous prime is 2311343. The next prime is 2311349. The reversal of 2311345 is 5431132.

It can be written as a sum of positive squares in 4 ways, for example, as 1083681 + 1227664 = 1041^2 + 1108^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2311345 - 2¹ = 2311343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2311343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576 + ... + 2665.

It is an arithmetic number, because the mean of its divisors is an integer number (349965).

2^2311345 is an apocalyptic number.

It is an amenable number.

2311345 is a deficient number, since it is larger than the sum of its proper divisors (488375).

2311345 is a wasteful number, since it uses less digits than its factorization.

2311345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355.

The product of its digits is 360, while the sum is 19.

The square root of 2311345 is about 1520.3108234831. The cubic root of 2311345 is about 132.2172920926.

Adding to 2311345 its reverse (5431132), we get a palindrome (7742477).

The spelling of 2311345 in words is "two million, three hundred eleven thousand, three hundred forty-five".