1340366323 has 2 divisors, whose sum is σ = 1340366324. Its totient is φ = 1340366322.

The previous prime is 1340366249. The next prime is 1340366371. The reversal of 1340366323 is 3236630431.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3236630431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340366323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340366023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670183161 + 670183162.

It is an arithmetic number, because the mean of its divisors is an integer number (670183162).

Almost surely, 2^1340366323 is an apocalyptic number.

1340366323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340366323 is an equidigital number, since it uses as much as digits as its factorization.

1340366323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 31.

The square root of 1340366323 is about 36611.0136844092. The cubic root of 1340366323 is about 1102.5742253560.

Adding to 1340366323 its reverse (3236630431), we get a palindrome (4576996754).

The spelling of 1340366323 in words is "one billion, three hundred forty million, three hundred sixty-six thousand, three hundred twenty-three".