1340040231012 has 96 divisors (see below), whose sum is σ = 3705884017920. Its totient is φ = 368744140800.

The previous prime is 1340040231007. The next prime is 1340040231067. The reversal of 1340040231012 is 2101320400431.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1340040231012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290928 + ... + 1662744.

It is an arithmetic number, because the mean of its divisors is an integer number (38602958520).

Almost surely, 2^{1340040231012} is an apocalyptic number.

1340040231012 is a gapful number since it is divisible by the number (12) 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 1340040231012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1852942008960).

1340040231012 is an abundant number, since it is smaller than the sum of its proper divisors (2365843786908).

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

1340040231012 is a wasteful number, since it uses less digits than its factorization.

1340040231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372261 (or 1372259 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1340040231012 its reverse (2101320400431), we get a palindrome (3441360631443).

The spelling of 1340040231012 in words is "one trillion, three hundred forty billion, forty million, two hundred thirty-one thousand, twelve".