2311323143 has 8 divisors (see below), whose sum is σ = 2366188176. Its totient is φ = 2256508800.

The previous prime is 2311323139. The next prime is 2311323173. The reversal of 2311323143 is 3413231132.

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

It is a cyclic number.

It is not a de Polignac number, because 2311323143 - 2² = 2311323139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311323103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89183 + ... + 112143.

It is an arithmetic number, because the mean of its divisors is an integer number (295773522).

Almost surely, 2^2311323143 is an apocalyptic number.

2311323143 is a deficient number, since it is larger than the sum of its proper divisors (54865033).

2311323143 is a wasteful number, since it uses less digits than its factorization.

2311323143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25345.

The product of its digits is 1296, while the sum is 23.

The square root of 2311323143 is about 48076.2222205531. Note that the first 5 decimals coincide. The cubic root of 2311323143 is about 1322.1687532477.

Adding to 2311323143 its reverse (3413231132), we get a palindrome (5724554275).

The spelling of 2311323143 in words is "two billion, three hundred eleven million, three hundred twenty-three thousand, one hundred forty-three".