311440104103243 has 4 divisors (see below), whose sum is σ = 312009464440360. Its totient is φ = 310870743766128.

The previous prime is 311440104103241. The next prime is 311440104103343. The reversal of 311440104103243 is 342301401044113.

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 311440104103243 - 2¹ = 311440104103241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311440104103241) 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, 284680167738 + ... + 284680168831.

It is an arithmetic number, because the mean of its divisors is an integer number (78002366110090).

Almost surely, 2^{311440104103243} is an apocalyptic number.

311440104103243 is a deficient number, since it is larger than the sum of its proper divisors (569360337117).

311440104103243 is an equidigital number, since it uses as much as digits as its factorization.

311440104103243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569360337116.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 311440104103243 its reverse (342301401044113), we get a palindrome (653741505147356).

The spelling of 311440104103243 in words is "three hundred eleven trillion, four hundred forty billion, one hundred four million, one hundred three thousand, two hundred forty-three".