1340423131544 has 32 divisors (see below), whose sum is σ = 2872449112320. Its totient is φ = 574444290336.

The previous prime is 1340423131507. The next prime is 1340423131577. The reversal of 1340423131544 is 4451313240431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991487 + ... + 1914129.

It is an arithmetic number, because the mean of its divisors is an integer number (89764034760).

Almost surely, 2^{1340423131544} is an apocalyptic number.

1340423131544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1340423131544 is an abundant number, since it is smaller than the sum of its proper divisors (1532025980776).

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

1340423131544 is a wasteful number, since it uses less digits than its factorization.

1340423131544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948599 (or 948595 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 1340423131544 its reverse (4451313240431), we get a palindrome (5791736371975).

The spelling of 1340423131544 in words is "one trillion, three hundred forty billion, four hundred twenty-three million, one hundred thirty-one thousand, five hundred forty-four".