1323303251 has 2 divisors, whose sum is σ = 1323303252. Its totient is φ = 1323303250.

The previous prime is 1323303227. The next prime is 1323303253. The reversal of 1323303251 is 1523033231.

It is a strong prime.

It is an emirp because it is prime and its reverse (1523033231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323303251 - 2³⁰ = 249561427 is a prime.

It is a super-2 number, since 2×1323303251² = 3502262988214338002, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1323303253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1323303253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661651625 + 661651626.

It is an arithmetic number, because the mean of its divisors is an integer number (661651626).

Almost surely, 2^1323303251 is an apocalyptic number.

1323303251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323303251 is an equidigital number, since it uses as much as digits as its factorization.

1323303251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 1323303251 is about 36377.2353402509. The cubic root of 1323303251 is about 1097.8755832519.

Adding to 1323303251 its reverse (1523033231), we get a palindrome (2846336482).

The spelling of 1323303251 in words is "one billion, three hundred twenty-three million, three hundred three thousand, two hundred fifty-one".