1321303229 has 2 divisors, whose sum is σ = 1321303230. Its totient is φ = 1321303228.

The previous prime is 1321303219. The next prime is 1321303253. The reversal of 1321303229 is 9223031231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1011367204 + 309936025 = 31802^2 + 17605^2 .

It is an emirp because it is prime and its reverse (9223031231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321303229 - 2¹⁶ = 1321237693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321303198 and 1321303207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321303219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660651614 + 660651615.

It is an arithmetic number, because the mean of its divisors is an integer number (660651615).

Almost surely, 2^1321303229 is an apocalyptic number.

It is an amenable number.

1321303229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321303229 is an equidigital number, since it uses as much as digits as its factorization.

1321303229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1321303229 is about 36349.7349233801. The cubic root of 1321303229 is about 1097.3221997728.

The spelling of 1321303229 in words is "one billion, three hundred twenty-one million, three hundred three thousand, two hundred twenty-nine".