1306123433 has 2 divisors, whose sum is σ = 1306123434. Its totient is φ = 1306123432.

The previous prime is 1306123411. The next prime is 1306123453. The reversal of 1306123433 is 3343216031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812706064 + 493417369 = 28508^2 + 22213^2 .

It is an emirp because it is prime and its reverse (3343216031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1306123433 - 2²⁰ = 1305074857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1306123453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653061716 + 653061717.

It is an arithmetic number, because the mean of its divisors is an integer number (653061717).

Almost surely, 2^1306123433 is an apocalyptic number.

It is an amenable number.

1306123433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306123433 is an equidigital number, since it uses as much as digits as its factorization.

1306123433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 1306123433 is about 36140.3297300952. The cubic root of 1306123433 is about 1093.1038075240.

Adding to 1306123433 its reverse (3343216031), we get a palindrome (4649339464).

The spelling of 1306123433 in words is "one billion, three hundred six million, one hundred twenty-three thousand, four hundred thirty-three".