1306140023 has 2 divisors, whose sum is σ = 1306140024. Its totient is φ = 1306140022.

The previous prime is 1306140001. The next prime is 1306140083. The reversal of 1306140023 is 3200416031.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1306140023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1306139977 and 1306140004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306140083) 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 as a sum of consecutive naturals, namely, 653070011 + 653070012.

It is an arithmetic number, because the mean of its divisors is an integer number (653070012).

Almost surely, 2^1306140023 is an apocalyptic number.

1306140023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306140023 is an equidigital number, since it uses as much as digits as its factorization.

1306140023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1306140023 is about 36140.5592513453. The cubic root of 1306140023 is about 1093.1084356000.

Adding to 1306140023 its reverse (3200416031), we get a palindrome (4506556054).

The spelling of 1306140023 in words is "one billion, three hundred six million, one hundred forty thousand, twenty-three".