2311343645 has 32 divisors (see below), whose sum is σ = 3122068320. Its totient is φ = 1630863360.

The previous prime is 2311343641. The next prime is 2311343653. The reversal of 2311343645 is 5463431132.

It can be written as a sum of positive squares in 16 ways, for example, as 1756364281 + 554979364 = 41909^2 + 23558^2 .

It is not a de Polignac number, because 2311343645 - 2² = 2311343641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311343641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176525 + ... + 189165.

It is an arithmetic number, because the mean of its divisors is an integer number (97564635).

Almost surely, 2^2311343645 is an apocalyptic number.

It is an amenable number.

2311343645 is a deficient number, since it is larger than the sum of its proper divisors (810724675).

2311343645 is a wasteful number, since it uses less digits than its factorization.

2311343645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12785.

The product of its digits is 25920, while the sum is 32.

The square root of 2311343645 is about 48076.4354439886. The cubic root of 2311343645 is about 1322.1726625559.

Adding to 2311343645 its reverse (5463431132), we get a palindrome (7774774777).

The spelling of 2311343645 in words is "two billion, three hundred eleven million, three hundred forty-three thousand, six hundred forty-five".