311440121143430 has 16 divisors (see below), whose sum is σ = 560592429710544. Its totient is φ = 124576001423520.

The previous prime is 311440121143397. The next prime is 311440121143453. The reversal of 311440121143430 is 34341121044113.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36430949 + ... + 44159871.

It is an arithmetic number, because the mean of its divisors is an integer number (35037026856909).

Almost surely, 2^{311440121143430} is an apocalyptic number.

311440121143430 is a deficient number, since it is larger than the sum of its proper divisors (249152308567114).

311440121143430 is a wasteful number, since it uses less digits than its factorization.

311440121143430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11758471.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 311440121143430 its reverse (34341121044113), we get a palindrome (345781242187543).

The spelling of 311440121143430 in words is "three hundred eleven trillion, four hundred forty billion, one hundred twenty-one million, one hundred forty-three thousand, four hundred thirty".