1306894213 has 2 divisors, whose sum is σ = 1306894214. Its totient is φ = 1306894212.

The previous prime is 1306894153. The next prime is 1306894217. The reversal of 1306894213 is 3124986031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657307044 + 649587169 = 25638^2 + 25487^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306894213 - 2²⁹ = 770023301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306894217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653447106 + 653447107.

It is an arithmetic number, because the mean of its divisors is an integer number (653447107).

Almost surely, 2^1306894213 is an apocalyptic number.

It is an amenable number.

1306894213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306894213 is an equidigital number, since it uses as much as digits as its factorization.

1306894213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1306894213 is about 36150.9918674440. The cubic root of 1306894213 is about 1093.3187889594.

The spelling of 1306894213 in words is "one billion, three hundred six million, eight hundred ninety-four thousand, two hundred thirteen".