1313209229 has 2 divisors, whose sum is σ = 1313209230. Its totient is φ = 1313209228.

The previous prime is 1313209201. The next prime is 1313209243. The reversal of 1313209229 is 9229023131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1288953604 + 24255625 = 35902^2 + 4925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313209229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1313209195 and 1313209204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313209129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656604614 + 656604615.

It is an arithmetic number, because the mean of its divisors is an integer number (656604615).

Almost surely, 2^1313209229 is an apocalyptic number.

It is an amenable number.

1313209229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313209229 is an equidigital number, since it uses as much as digits as its factorization.

1313209229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1313209229 is about 36238.2288336502. The cubic root of 1313209229 is about 1095.0769610149.

The spelling of 1313209229 in words is "one billion, three hundred thirteen million, two hundred nine thousand, two hundred twenty-nine".