2311145863 has 4 divisors (see below), whose sum is σ = 2488926328. Its totient is φ = 2133365400.

The previous prime is 2311145843. The next prime is 2311145917. The reversal of 2311145863 is 3685411132.

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 2311145863 - 2²⁵ = 2277591431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311145803) 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, 88890213 + ... + 88890238.

It is an arithmetic number, because the mean of its divisors is an integer number (622231582).

Almost surely, 2^2311145863 is an apocalyptic number.

2311145863 is a deficient number, since it is larger than the sum of its proper divisors (177780465).

2311145863 is a wasteful number, since it uses less digits than its factorization.

2311145863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177780464.

The product of its digits is 17280, while the sum is 34.

The square root of 2311145863 is about 48074.3784463200. The cubic root of 2311145863 is about 1322.1349486467.

Adding to 2311145863 its reverse (3685411132), we get a palindrome (5996556995).

The spelling of 2311145863 in words is "two billion, three hundred eleven million, one hundred forty-five thousand, eight hundred sixty-three".