1340330361 has 4 divisors (see below), whose sum is σ = 1787107152. Its totient is φ = 893553572.

The previous prime is 1340330351. The next prime is 1340330363. The reversal of 1340330361 is 1630330431.

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 1340330361 - 2¹¹ = 1340328313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1340330363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223388391 + ... + 223388396.

It is an arithmetic number, because the mean of its divisors is an integer number (446776788).

Almost surely, 2^1340330361 is an apocalyptic number.

It is an amenable number.

1340330361 is a deficient number, since it is larger than the sum of its proper divisors (446776791).

1340330361 is an equidigital number, since it uses as much as digits as its factorization.

1340330361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446776790.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 1340330361 is about 36610.5225447548. The cubic root of 1340330361 is about 1102.5643645868.

Adding to 1340330361 its reverse (1630330431), we get a palindrome (2970660792).

The spelling of 1340330361 in words is "one billion, three hundred forty million, three hundred thirty thousand, three hundred sixty-one".