1240144330213 has 4 divisors (see below), whose sum is σ = 1266530379840. Its totient is φ = 1213758280588.

The previous prime is 1240144330157. The next prime is 1240144330333. The reversal of 1240144330213 is 3120334410421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1240144330213 - 2²⁹ = 1239607459301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240144331213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13193024743 + ... + 13193024836.

It is an arithmetic number, because the mean of its divisors is an integer number (316632594960).

Almost surely, 2^{1240144330213} is an apocalyptic number.

It is an amenable number.

1240144330213 is a deficient number, since it is larger than the sum of its proper divisors (26386049627).

1240144330213 is an equidigital number, since it uses as much as digits as its factorization.

1240144330213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26386049626.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1240144330213 its reverse (3120334410421), we get a palindrome (4360478740634).

The spelling of 1240144330213 in words is "one trillion, two hundred forty billion, one hundred forty-four million, three hundred thirty thousand, two hundred thirteen".