1240344343 has 8 divisors (see below), whose sum is σ = 1418083200. Its totient is φ = 1062742200.

The previous prime is 1240344271. The next prime is 1240344359. The reversal of 1240344343 is 3434430421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240344343 - 2¹³ = 1240336151 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 (1240344143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13933 + ... + 51718.

It is an arithmetic number, because the mean of its divisors is an integer number (177260400).

Almost surely, 2^1240344343 is an apocalyptic number.

1240344343 is a deficient number, since it is larger than the sum of its proper divisors (177738857).

1240344343 is an equidigital number, since it uses as much as digits as its factorization.

1240344343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68357.

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 1240344343 is about 35218.5227259748. The cubic root of 1240344343 is about 1074.4365081426.

Adding to 1240344343 its reverse (3434430421), we get a palindrome (4674774764).

The spelling of 1240344343 in words is "one billion, two hundred forty million, three hundred forty-four thousand, three hundred forty-three".