1340512223 has 2 divisors, whose sum is σ = 1340512224. Its totient is φ = 1340512222.

The previous prime is 1340512219. The next prime is 1340512249. The reversal of 1340512223 is 3222150431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340512223 - 2² = 1340512219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340512253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670256111 + 670256112.

It is an arithmetic number, because the mean of its divisors is an integer number (670256112).

Almost surely, 2^1340512223 is an apocalyptic number.

1340512223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340512223 is an equidigital number, since it uses as much as digits as its factorization.

1340512223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1340512223 is about 36613.0061999831. The cubic root of 1340512223 is about 1102.6142292813.

Adding to 1340512223 its reverse (3222150431), we get a palindrome (4562662654).

The spelling of 1340512223 in words is "one billion, three hundred forty million, five hundred twelve thousand, two hundred twenty-three".