311350605043 has 4 divisors (see below), whose sum is σ = 311351732208. Its totient is φ = 311349477880.

The previous prime is 311350605037. The next prime is 311350605089. The reversal of 311350605043 is 340506053113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311350605043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311350604996 and 311350605014.

It is not an unprimeable number, because it can be changed into a prime (311350605023) 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, 162978 + ... + 805768.

It is an arithmetic number, because the mean of its divisors is an integer number (77837933052).

Almost surely, 2^311350605043 is an apocalyptic number.

311350605043 is a deficient number, since it is larger than the sum of its proper divisors (1127165).

311350605043 is an equidigital number, since it uses as much as digits as its factorization.

311350605043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127164.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 311350605043 its reverse (340506053113), we get a palindrome (651856658156).

The spelling of 311350605043 in words is "three hundred eleven billion, three hundred fifty million, six hundred five thousand, forty-three".