311403243433242 has 16 divisors (see below), whose sum is σ = 622807007536800. Its totient is φ = 103800994366032.

The previous prime is 311403243433223. The next prime is 311403243433297. The reversal of 311403243433242 is 242334342304113.

It is a self number, because there is not a number n which added to its sum of digits gives 311403243433242.

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, 13692492 + ... + 28465607.

It is an arithmetic number, because the mean of its divisors is an integer number (38925437971050).

Almost surely, 2^{311403243433242} is an apocalyptic number.

311403243433242 is an abundant number, since it is smaller than the sum of its proper divisors (311403764103558).

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

311403243433242 is a wasteful number, since it uses less digits than its factorization.

311403243433242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43389197.

The product of its (nonzero) digits is 497664, while the sum is 39.

Adding to 311403243433242 its reverse (242334342304113), we get a palindrome (553737585737355).

The spelling of 311403243433242 in words is "three hundred eleven trillion, four hundred three billion, two hundred forty-three million, four hundred thirty-three thousand, two hundred forty-two".