1340430341 has 4 divisors (see below), whose sum is σ = 1360436832. Its totient is φ = 1320423852.

The previous prime is 1340430323. The next prime is 1340430347. The reversal of 1340430341 is 1430340431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1430340431 = 13 ⋅110026187.

It is a cyclic number.

It is not a de Polignac number, because 1340430341 - 2⁶ = 1340430277 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 (1340430347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10003145 + ... + 10003278.

It is an arithmetic number, because the mean of its divisors is an integer number (340109208).

Almost surely, 2^1340430341 is an apocalyptic number.

It is an amenable number.

1340430341 is a deficient number, since it is larger than the sum of its proper divisors (20006491).

1340430341 is an equidigital number, since it uses as much as digits as its factorization.

1340430341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20006490.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1340430341 is about 36611.8879737170. The cubic root of 1340430341 is about 1102.5917786352.

Adding to 1340430341 its reverse (1430340431), we get a palindrome (2770770772).

The spelling of 1340430341 in words is "one billion, three hundred forty million, four hundred thirty thousand, three hundred forty-one".