2311143155 has 32 divisors (see below), whose sum is σ = 3003678720. Its totient is φ = 1702103040.

The previous prime is 2311143151. The next prime is 2311143167. The reversal of 2311143155 is 5513411132.

It is not a de Polignac number, because 2311143155 - 2² = 2311143151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2311143151) 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 31 ways as a sum of consecutive naturals, for example, 686366 + ... + 689724.

It is an arithmetic number, because the mean of its divisors is an integer number (93864960).

Almost surely, 2^2311143155 is an apocalyptic number.

2311143155 is a deficient number, since it is larger than the sum of its proper divisors (692535565).

2311143155 is a wasteful number, since it uses less digits than its factorization.

2311143155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611.

The product of its digits is 1800, while the sum is 26.

The square root of 2311143155 is about 48074.3502816211. The cubic root of 2311143155 is about 1322.1344322589.

Adding to 2311143155 its reverse (5513411132), we get a palindrome (7824554287).

It can be divided in two parts, 23111 and 43155, that added together give a palindrome (66266).

The spelling of 2311143155 in words is "two billion, three hundred eleven million, one hundred forty-three thousand, one hundred fifty-five".