1340351205 has 8 divisors (see below), whose sum is σ = 2144561952. Its totient is φ = 714853968.

The previous prime is 1340351189. The next prime is 1340351239. The reversal of 1340351205 is 5021530431.

1340351205 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1340351205 - 2⁴ = 1340351189 is a prime.

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, 44678359 + ... + 44678388.

It is an arithmetic number, because the mean of its divisors is an integer number (268070244).

Almost surely, 2^1340351205 is an apocalyptic number.

1340351205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1340351205 is a deficient number, since it is larger than the sum of its proper divisors (804210747).

1340351205 is an equidigital number, since it uses as much as digits as its factorization.

1340351205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89356755.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1340351205 is about 36610.8072159028. The cubic root of 1340351205 is about 1102.5700800266.

Adding to 1340351205 its reverse (5021530431), we get a palindrome (6361881636).

The spelling of 1340351205 in words is "one billion, three hundred forty million, three hundred fifty-one thousand, two hundred five".