1301204321 has 2 divisors, whose sum is σ = 1301204322. Its totient is φ = 1301204320.

The previous prime is 1301204287. The next prime is 1301204329. The reversal of 1301204321 is 1234021031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 958769296 + 342435025 = 30964^2 + 18505^2 .

It is an emirp because it is prime and its reverse (1234021031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1301204321 - 2²² = 1297010017 is a prime.

It is a super-3 number, since 3×1301204321³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1301204321.

It is not a weakly prime, because it can be changed into another prime (1301204329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650602160 + 650602161.

It is an arithmetic number, because the mean of its divisors is an integer number (650602161).

Almost surely, 2^1301204321 is an apocalyptic number.

It is an amenable number.

1301204321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301204321 is an equidigital number, since it uses as much as digits as its factorization.

1301204321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1301204321 is about 36072.2098158679. The cubic root of 1301204321 is about 1091.7298014442.

Adding to 1301204321 its reverse (1234021031), we get a palindrome (2535225352).

The spelling of 1301204321 in words is "one billion, three hundred one million, two hundred four thousand, three hundred twenty-one".