1340171227 has 4 divisors (see below), whose sum is σ = 1340729496. Its totient is φ = 1339612960.

The previous prime is 1340171219. The next prime is 1340171249. The reversal of 1340171227 is 7221710431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1340171227 - 2³ = 1340171219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340171195 and 1340171204.

It is not an unprimeable number, because it can be changed into a prime (1340171257) 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, 275518 + ... + 280339.

It is an arithmetic number, because the mean of its divisors is an integer number (335182374).

Almost surely, 2^1340171227 is an apocalyptic number.

1340171227 is a deficient number, since it is larger than the sum of its proper divisors (558269).

1340171227 is an equidigital number, since it uses as much as digits as its factorization.

1340171227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558268.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1340171227 is about 36608.3491433307. The cubic root of 1340171227 is about 1102.5207279762.

Adding to 1340171227 its reverse (7221710431), we get a palindrome (8561881658).

The spelling of 1340171227 in words is "one billion, three hundred forty million, one hundred seventy-one thousand, two hundred twenty-seven".