311426839 has 4 divisors (see below), whose sum is σ = 316705320. Its totient is φ = 306148360.

The previous prime is 311426821. The next prime is 311426851. The reversal of 311426839 is 938624113.

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 311426839 - 2⁵ = 311426807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311426798 and 311426807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311426879) 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, 2639152 + ... + 2639269.

It is an arithmetic number, because the mean of its divisors is an integer number (79176330).

Almost surely, 2^311426839 is an apocalyptic number.

311426839 is a deficient number, since it is larger than the sum of its proper divisors (5278481).

311426839 is an equidigital number, since it uses as much as digits as its factorization.

311426839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278480.

The product of its digits is 31104, while the sum is 37.

The square root of 311426839 is about 17647.2898485858. The cubic root of 311426839 is about 677.8267113396.

The spelling of 311426839 in words is "three hundred eleven million, four hundred twenty-six thousand, eight hundred thirty-nine".