8312138311 has 4 divisors (see below), whose sum is σ = 8598763800. Its totient is φ = 8025512824.

The previous prime is 8312138309. The next prime is 8312138327. The reversal of 8312138311 is 1138312138.

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 8312138311 - 2¹ = 8312138309 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 (8312138381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143312701 + ... + 143312758.

It is an arithmetic number, because the mean of its divisors is an integer number (2149690950).

Almost surely, 2^8312138311 is an apocalyptic number.

8312138311 is a deficient number, since it is larger than the sum of its proper divisors (286625489).

8312138311 is a wasteful number, since it uses less digits than its factorization.

8312138311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286625488.

The product of its digits is 3456, while the sum is 31.

The square root of 8312138311 is about 91170.9290892662. The cubic root of 8312138311 is about 2025.6803738061.

The spelling of 8312138311 in words is "eight billion, three hundred twelve million, one hundred thirty-eight thousand, three hundred eleven".