12831278011 has 4 divisors (see below), whose sum is σ = 12909997672. Its totient is φ = 12752558352.

The previous prime is 12831277993. The next prime is 12831278021. The reversal of 12831278011 is 11087213821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11087213821 = 307 ⋅36114703.

It is a cyclic number.

It is not a de Polignac number, because 12831278011 - 2⁷ = 12831277883 is a prime.

It is a super-2 number, since 2×12831278011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12831278021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39359586 + ... + 39359911.

It is an arithmetic number, because the mean of its divisors is an integer number (3227499418).

Almost surely, 2^12831278011 is an apocalyptic number.

12831278011 is a deficient number, since it is larger than the sum of its proper divisors (78719661).

12831278011 is an equidigital number, since it uses as much as digits as its factorization.

12831278011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78719660.

The product of its (nonzero) digits is 5376, while the sum is 34.

The spelling of 12831278011 in words is "twelve billion, eight hundred thirty-one million, two hundred seventy-eight thousand, eleven".