311342432443 has 4 divisors (see below), whose sum is σ = 355819922800. Its totient is φ = 266864942088.

The previous prime is 311342432407. The next prime is 311342432449. The reversal of 311342432443 is 344234243113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311342432443 is a prime.

It is a super-2 number, since 2×311342432443² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311342432399 and 311342432408.

It is not an unprimeable number, because it can be changed into a prime (311342432449) 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, 22238745168 + ... + 22238745181.

It is an arithmetic number, because the mean of its divisors is an integer number (88954980700).

Almost surely, 2^311342432443 is an apocalyptic number.

311342432443 is a deficient number, since it is larger than the sum of its proper divisors (44477490357).

311342432443 is an equidigital number, since it uses as much as digits as its factorization.

311342432443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44477490356.

The product of its digits is 82944, while the sum is 34.

Adding to 311342432443 its reverse (344234243113), we get a palindrome (655576675556).

The spelling of 311342432443 in words is "three hundred eleven billion, three hundred forty-two million, four hundred thirty-two thousand, four hundred forty-three".