311044022242 has 4 divisors (see below), whose sum is σ = 466566033366. Its totient is φ = 155522011120.

The previous prime is 311044022221. The next prime is 311044022249. The reversal of 311044022242 is 242220440113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242220440113 = 43 ⋅5633033491.

It can be written as a sum of positive squares in only one way, i.e., 295804366641 + 15239655601 = 543879^2 + 123449^2 .

It is not an unprimeable number, because it can be changed into a prime (311044022249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77761005559 + ... + 77761005562.

Almost surely, 2^311044022242 is an apocalyptic number.

311044022242 is a deficient number, since it is larger than the sum of its proper divisors (155522011124).

311044022242 is a wasteful number, since it uses less digits than its factorization.

311044022242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155522011123.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 311044022242 its reverse (242220440113), we get a palindrome (553264462355).

The spelling of 311044022242 in words is "three hundred eleven billion, forty-four million, twenty-two thousand, two hundred forty-two".