1196431309 has 2 divisors, whose sum is σ = 1196431310. Its totient is φ = 1196431308.

The previous prime is 1196431303. The next prime is 1196431367. The reversal of 1196431309 is 9031346911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1059307209 + 137124100 = 32547^2 + 11710^2 .

It is a cyclic number.

It is not a de Polignac number, because 1196431309 - 2¹⁹ = 1195907021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1196431303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598215654 + 598215655.

It is an arithmetic number, because the mean of its divisors is an integer number (598215655).

Almost surely, 2^1196431309 is an apocalyptic number.

It is an amenable number.

1196431309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1196431309 is an equidigital number, since it uses as much as digits as its factorization.

1196431309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 1196431309 is about 34589.4681803580. The cubic root of 1196431309 is about 1061.6041065121.

The spelling of 1196431309 in words is "one billion, one hundred ninety-six million, four hundred thirty-one thousand, three hundred nine".