1240340031312 has 40 divisors (see below), whose sum is σ = 3307573420800. Its totient is φ = 400109687040.

The previous prime is 1240340031283. The next prime is 1240340031347. The reversal of 1240340031312 is 2131300430421.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416779437 + ... + 416782412.

It is an arithmetic number, because the mean of its divisors is an integer number (82689335520).

Almost surely, 2^{1240340031312} is an apocalyptic number.

1240340031312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1240340031312 is an abundant number, since it is smaller than the sum of its proper divisors (2067233389488).

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

1240340031312 is a wasteful number, since it uses less digits than its factorization.

1240340031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833561891 (or 833561885 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1240340031312 its reverse (2131300430421), we get a palindrome (3371640461733).

The spelling of 1240340031312 in words is "one trillion, two hundred forty billion, three hundred forty million, thirty-one thousand, three hundred twelve".