311431004120040 has 192 divisors, whose sum is σ = 1086891944313600. Its totient is φ = 71180214723072.

The previous prime is 311431004119997. The next prime is 311431004120087. The reversal of 311431004120040 is 40021400134113.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103396881 + ... + 106366239.

It is an arithmetic number, because the mean of its divisors is an integer number (5660895543300).

Almost surely, 2^{311431004120040} is an apocalyptic number.

311431004120040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311431004120040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543445972156800).

311431004120040 is an abundant number, since it is smaller than the sum of its proper divisors (775460940193560).

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

311431004120040 is a wasteful number, since it uses less digits than its factorization.

311431004120040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987224 (or 2987213 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 311431004120040 its reverse (40021400134113), we get a palindrome (351452404254153).

The spelling of 311431004120040 in words is "three hundred eleven trillion, four hundred thirty-one billion, four million, one hundred twenty thousand, forty".