1340332247 has 2 divisors, whose sum is σ = 1340332248. Its totient is φ = 1340332246.

The previous prime is 1340332193. The next prime is 1340332261. The reversal of 1340332247 is 7422330431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340332247 - 2¹⁴ = 1340315863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340332277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670166123 + 670166124.

It is an arithmetic number, because the mean of its divisors is an integer number (670166124).

Almost surely, 2^1340332247 is an apocalyptic number.

1340332247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340332247 is an equidigital number, since it uses as much as digits as its factorization.

1340332247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 1340332247 is about 36610.5483023677. The cubic root of 1340332247 is about 1102.5648817317.

Adding to 1340332247 its reverse (7422330431), we get a palindrome (8762662678).

The spelling of 1340332247 in words is "one billion, three hundred forty million, three hundred thirty-two thousand, two hundred forty-seven".