311143034442 has 16 divisors (see below), whose sum is σ = 622303781472. Its totient is φ = 103711392720.

The previous prime is 311143034413. The next prime is 311143034443. The reversal of 311143034442 is 244430341113.

It is not an unprimeable number, because it can be changed into a prime (311143034443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503953 + ... + 936084.

It is an arithmetic number, because the mean of its divisors is an integer number (38893986342).

Almost surely, 2^311143034442 is an apocalyptic number.

311143034442 is an abundant number, since it is smaller than the sum of its proper divisors (311160747030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311143034442 is a wasteful number, since it uses less digits than its factorization.

311143034442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476053.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 311143034442 its reverse (244430341113), we get a palindrome (555573375555).

The spelling of 311143034442 in words is "three hundred eleven billion, one hundred forty-three million, thirty-four thousand, four hundred forty-two".