311326240146540 has 96 divisors (see below), whose sum is σ = 949234271328000. Its totient is φ = 75938741690112.

The previous prime is 311326240146529. The next prime is 311326240146547. The reversal of 311326240146540 is 45641042623113.

It is a junction number, because it is equal to n+sod(n) for n = 311326240146492 and 311326240146501.

It is not an unprimeable number, because it can be changed into a prime (311326240146547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4708470270 + ... + 4708536389.

It is an arithmetic number, because the mean of its divisors is an integer number (9887856993000).

Almost surely, 2^{311326240146540} is an apocalyptic number.

311326240146540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311326240146540 is an abundant number, since it is smaller than the sum of its proper divisors (637908031181460).

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

311326240146540 is a wasteful number, since it uses less digits than its factorization.

311326240146540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9417006719 (or 9417006717 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 311326240146540 its reverse (45641042623113), we get a palindrome (356967282769653).

The spelling of 311326240146540 in words is "three hundred eleven trillion, three hundred twenty-six billion, two hundred forty million, one hundred forty-six thousand, five hundred forty".