311433120242 has 16 divisors (see below), whose sum is σ = 485686024992. Its totient is φ = 149651150880.

The previous prime is 311433120223. The next prime is 311433120293. The reversal of 311433120242 is 242021334113.

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 in 7 ways as a sum of consecutive naturals, for example, 28337528 + ... + 28348515.

It is an arithmetic number, because the mean of its divisors is an integer number (30355376562).

Almost surely, 2^311433120242 is an apocalyptic number.

311433120242 is a deficient number, since it is larger than the sum of its proper divisors (174252904750).

311433120242 is a wasteful number, since it uses less digits than its factorization.

311433120242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56686153.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 311433120242 its reverse (242021334113), we get a palindrome (553454454355).

The spelling of 311433120242 in words is "three hundred eleven billion, four hundred thirty-three million, one hundred twenty thousand, two hundred forty-two".