1311124240440 has 288 divisors, whose sum is σ = 5248433108880. Its totient is φ = 282056914944.

The previous prime is 1311124240421. The next prime is 1311124240463. The reversal of 1311124240440 is 440424211131.

1311124240440 is a `hidden beast` number, since 1 + 3 + 1 + 11 + 242 + 404 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1886202 + ... + 2485961.

Almost surely, 2^{1311124240440} is an apocalyptic number.

1311124240440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311124240440 is an abundant number, since it is smaller than the sum of its proper divisors (3937308868440).

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

1311124240440 is a wasteful number, since it uses less digits than its factorization.

1311124240440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372211 (or 4372197 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1311124240440 its reverse (440424211131), we get a palindrome (1751548451571).

The spelling of 1311124240440 in words is "one trillion, three hundred eleven billion, one hundred twenty-four million, two hundred forty thousand, four hundred forty".