1073231309 has 2 divisors, whose sum is σ = 1073231310. Its totient is φ = 1073231308.

The previous prime is 1073231279. The next prime is 1073231317. The reversal of 1073231309 is 9031323701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646684900 + 426546409 = 25430^2 + 20653^2 .

It is an emirp because it is prime and its reverse (9031323701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1073231309 - 2²⁸ = 804795853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1073231389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536615654 + 536615655.

It is an arithmetic number, because the mean of its divisors is an integer number (536615655).

Almost surely, 2^1073231309 is an apocalyptic number.

It is an amenable number.

1073231309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1073231309 is an equidigital number, since it uses as much as digits as its factorization.

1073231309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 1073231309 is about 32760.2092331536. The cubic root of 1073231309 is about 1023.8376859251.

The spelling of 1073231309 in words is "one billion, seventy-three million, two hundred thirty-one thousand, three hundred nine".