311805454799 has 4 divisors (see below), whose sum is σ = 311807074920. Its totient is φ = 311803834680.

The previous prime is 311805454781. The next prime is 311805454819. The reversal of 311805454799 is 997454508113.

It is a happy number.

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 311805454799 - 2¹⁶ = 311805389263 is a prime.

It is a super-2 number, since 2×311805454799² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311805454739) 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, 475244 + ... + 921665.

It is an arithmetic number, because the mean of its divisors is an integer number (77951768730).

Almost surely, 2^311805454799 is an apocalyptic number.

311805454799 is a deficient number, since it is larger than the sum of its proper divisors (1620121).

311805454799 is a wasteful number, since it uses less digits than its factorization.

311805454799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620120.

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 311805454799 in words is "three hundred eleven billion, eight hundred five million, four hundred fifty-four thousand, seven hundred ninety-nine".