2312645 has 4 divisors (see below), whose sum is σ = 2775180. Its totient is φ = 1850112.

The previous prime is 2312641. The next prime is 2312677. The reversal of 2312645 is 5462132.

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 630436 + 1682209 = 794^2 + 1297^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312645 - 2² = 2312641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2312645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312641) 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, 231260 + ... + 231269.

It is an arithmetic number, because the mean of its divisors is an integer number (693795).

2^2312645 is an apocalyptic number.

It is an amenable number.

2312645 is a deficient number, since it is larger than the sum of its proper divisors (462535).

2312645 is an equidigital number, since it uses as much as digits as its factorization.

2312645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462534.

The product of its digits is 1440, while the sum is 23.

The square root of 2312645 is about 1520.7383075335. The cubic root of 2312645 is about 132.2420756803.

Adding to 2312645 its reverse (5462132), we get a palindrome (7774777).

The spelling of 2312645 in words is "two million, three hundred twelve thousand, six hundred forty-five".