2312144340 has 48 divisors (see below), whose sum is σ = 7062552000. Its totient is φ = 560519680.

The previous prime is 2312144327. The next prime is 2312144399. The reversal of 2312144340 is 434412132.

It is a super-2 number, since 2×2312144340² = 10692022897988071200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2312144340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1750965 + ... + 1752284.

It is an arithmetic number, because the mean of its divisors is an integer number (147136500).

Almost surely, 2^2312144340 is an apocalyptic number.

2312144340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312144340 is an abundant number, since it is smaller than the sum of its proper divisors (4750407660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2312144340 is a wasteful number, since it uses less digits than its factorization.

2312144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503272 (or 3503270 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2312144340 is about 48084.7620353891. The cubic root of 2312144340 is about 1322.3253204870.

Adding to 2312144340 its reverse (434412132), we get a palindrome (2746556472).

The spelling of 2312144340 in words is "two billion, three hundred twelve million, one hundred forty-four thousand, three hundred forty".