1303209997 has 2 divisors, whose sum is σ = 1303209998. Its totient is φ = 1303209996.

The previous prime is 1303209983. The next prime is 1303210009. The reversal of 1303209997 is 7999023031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756305001 + 546904996 = 27501^2 + 23386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303209997 - 2¹⁵ = 1303177229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1303209907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651604998 + 651604999.

It is an arithmetic number, because the mean of its divisors is an integer number (651604999).

Almost surely, 2^1303209997 is an apocalyptic number.

It is an amenable number.

1303209997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303209997 is an equidigital number, since it uses as much as digits as its factorization.

1303209997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 1303209997 is about 36099.9999584488. Note that the first 4 decimals coincide. The cubic root of 1303209997 is about 1092.2904441614.

The spelling of 1303209997 in words is "one billion, three hundred three million, two hundred nine thousand, nine hundred ninety-seven".