311431240322142 has 16 divisors (see below), whose sum is σ = 624300962129040. Its totient is φ = 103570666526592.

The previous prime is 311431240322141. The next prime is 311431240322207. The reversal of 311431240322142 is 241223042134113.

It is a super-3 number, since 3×311431240322142³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311431240322141) 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, 59936725717 + ... + 59936730912.

It is an arithmetic number, because the mean of its divisors is an integer number (39018810133065).

Almost surely, 2^{311431240322142} is an apocalyptic number.

311431240322142 is an abundant number, since it is smaller than the sum of its proper divisors (312869721806898).

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

311431240322142 is a wasteful number, since it uses less digits than its factorization.

311431240322142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119873457067.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 311431240322142 its reverse (241223042134113), we get a palindrome (552654282456255).

The spelling of 311431240322142 in words is "three hundred eleven trillion, four hundred thirty-one billion, two hundred forty million, three hundred twenty-two thousand, one hundred forty-two".