311436807847 has 4 divisors (see below), whose sum is σ = 339749244936. Its totient is φ = 283124370760.

The previous prime is 311436807833. The next prime is 311436807883. The reversal of 311436807847 is 748708634113.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 311436807847 - 2⁷ = 311436807719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311436807794 and 311436807803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311436801847) 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, 14156218528 + ... + 14156218549.

It is an arithmetic number, because the mean of its divisors is an integer number (84937311234).

Almost surely, 2^311436807847 is an apocalyptic number.

311436807847 is a deficient number, since it is larger than the sum of its proper divisors (28312437089).

311436807847 is a wasteful number, since it uses less digits than its factorization.

311436807847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28312437088.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 311436807847 in words is "three hundred eleven billion, four hundred thirty-six million, eight hundred seven thousand, eight hundred forty-seven".