311243022442 has 16 divisors (see below), whose sum is σ = 509323334400. Its totient is φ = 141469498240.

The previous prime is 311243022437. The next prime is 311243022463. The reversal of 311243022442 is 244220342113.

It is a self number, because there is not a number n which added to its sum of digits gives 311243022442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515034 + ... + 942202.

It is an arithmetic number, because the mean of its divisors is an integer number (31832708400).

Almost surely, 2^311243022442 is an apocalyptic number.

311243022442 is a deficient number, since it is larger than the sum of its proper divisors (198080311958).

311243022442 is a wasteful number, since it uses less digits than its factorization.

311243022442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460301.

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

Adding to 311243022442 its reverse (244220342113), we get a palindrome (555463364555).

The spelling of 311243022442 in words is "three hundred eleven billion, two hundred forty-three million, twenty-two thousand, four hundred forty-two".