311440223422 has 4 divisors (see below), whose sum is σ = 467160335136. Its totient is φ = 155720111710.

The previous prime is 311440223333. The next prime is 311440223461. The reversal of 311440223422 is 224322044113.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77860055854 + ... + 77860055857.

It is an arithmetic number, because the mean of its divisors is an integer number (116790083784).

Almost surely, 2^311440223422 is an apocalyptic number.

311440223422 is a deficient number, since it is larger than the sum of its proper divisors (155720111714).

311440223422 is a wasteful number, since it uses less digits than its factorization.

311440223422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155720111713.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 311440223422 its reverse (224322044113), we get a palindrome (535762267535).

The spelling of 311440223422 in words is "three hundred eleven billion, four hundred forty million, two hundred twenty-three thousand, four hundred twenty-two".