311440042321342 has 32 divisors (see below), whose sum is σ = 510818772169728. Its totient is φ = 141233217060000.

The previous prime is 311440042321321. The next prime is 311440042321391. The reversal of 311440042321342 is 243123240044113.

It is a super-2 number, since 2×311440042321342² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311440042321298 and 311440042321307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833385292 + ... + 833758912.

It is an arithmetic number, because the mean of its divisors is an integer number (15963086630304).

Almost surely, 2^{311440042321342} is an apocalyptic number.

311440042321342 is a deficient number, since it is larger than the sum of its proper divisors (199378729848386).

311440042321342 is a wasteful number, since it uses less digits than its factorization.

311440042321342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461976.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 311440042321342 its reverse (243123240044113), we get a palindrome (554563282365455).

The spelling of 311440042321342 in words is "three hundred eleven trillion, four hundred forty billion, forty-two million, three hundred twenty-one thousand, three hundred forty-two".