311431647098879 has 4 divisors (see below), whose sum is σ = 311431709292384. Its totient is φ = 311431584905376.

The previous prime is 311431647098851. The next prime is 311431647098893. The reversal of 311431647098879 is 978890746134113.

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 311431647098879 - 2²⁰ = 311431646050303 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 (311431647098479) 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, 22857962 + ... + 33843015.

It is an arithmetic number, because the mean of its divisors is an integer number (77857927323096).

Almost surely, 2^{311431647098879} is an apocalyptic number.

311431647098879 is a deficient number, since it is larger than the sum of its proper divisors (62193505).

311431647098879 is an equidigital number, since it uses as much as digits as its factorization.

311431647098879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62193504.

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 311431647098879 in words is "three hundred eleven trillion, four hundred thirty-one billion, six hundred forty-seven million, ninety-eight thousand, eight hundred seventy-nine".