2152313243 has 4 divisors (see below), whose sum is σ = 2157426048. Its totient is φ = 2147200440.

The previous prime is 2152313231. The next prime is 2152313287. The reversal of 2152313243 is 3423132512.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2152313243 - 2⁴ = 2152313227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152313743) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2555771 + ... + 2556612.

It is an arithmetic number, because the mean of its divisors is an integer number (539356512).

Almost surely, 2^2152313243 is an apocalyptic number.

2152313243 is a deficient number, since it is larger than the sum of its proper divisors (5112805).

2152313243 is an equidigital number, since it uses as much as digits as its factorization.

2152313243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112804.

The product of its digits is 4320, while the sum is 26.

The square root of 2152313243 is about 46393.0301122917. The cubic root of 2152313243 is about 1291.1256010996.

Adding to 2152313243 its reverse (3423132512), we get a palindrome (5575445755).

The spelling of 2152313243 in words is "two billion, one hundred fifty-two million, three hundred thirteen thousand, two hundred forty-three".