311431312141340 has 48 divisors (see below), whose sum is σ = 654664497281760. Its totient is φ = 124447054233600.

The previous prime is 311431312141283. The next prime is 311431312141361. The reversal of 311431312141340 is 43141213134113.

It is a happy number.

It is a super-2 number, since 2×311431312141340² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311431312141297 and 311431312141306.

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, 2324689199 + ... + 2324823161.

It is an arithmetic number, because the mean of its divisors is an integer number (13638843693370).

Almost surely, 2^{311431312141340} is an apocalyptic number.

It is an amenable number.

311431312141340 is an abundant number, since it is smaller than the sum of its proper divisors (343233185140420).

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

311431312141340 is a wasteful number, since it uses less digits than its factorization.

311431312141340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250182 (or 250180 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 311431312141340 its reverse (43141213134113), we get a palindrome (354572525275453).

The spelling of 311431312141340 in words is "three hundred eleven trillion, four hundred thirty-one billion, three hundred twelve million, one hundred forty-one thousand, three hundred forty".