312276491819 has 4 divisors (see below), whose sum is σ = 318920672544. Its totient is φ = 305632311096.

The previous prime is 312276491741. The next prime is 312276491831. The reversal of 312276491819 is 918194672213.

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 312276491819 - 2⁸ = 312276491563 is a prime.

It is a super-2 number, since 2×312276491819² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312276491719) 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 3 ways as a sum of consecutive naturals, for example, 3322090292 + ... + 3322090385.

It is an arithmetic number, because the mean of its divisors is an integer number (79730168136).

Almost surely, 2^312276491819 is an apocalyptic number.

312276491819 is a deficient number, since it is larger than the sum of its proper divisors (6644180725).

312276491819 is an equidigital number, since it uses as much as digits as its factorization.

312276491819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644180724.

The product of its digits is 1306368, while the sum is 53.

The spelling of 312276491819 in words is "three hundred twelve billion, two hundred seventy-six million, four hundred ninety-one thousand, eight hundred nineteen".