1323423251 has 2 divisors, whose sum is σ = 1323423252. Its totient is φ = 1323423250.

The previous prime is 1323423221. The next prime is 1323423281. The reversal of 1323423251 is 1523243231.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1323423221) and next prime (1323423281).

It is a cyclic number.

It is not a de Polignac number, because 1323423251 - 2¹⁰ = 1323422227 is a prime.

It is a super-3 number, since 3×1323423251³ (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 1323423251.

It is not a weakly prime, because it can be changed into another prime (1323423221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661711625 + 661711626.

It is an arithmetic number, because the mean of its divisors is an integer number (661711626).

Almost surely, 2^1323423251 is an apocalyptic number.

1323423251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323423251 is an equidigital number, since it uses as much as digits as its factorization.

1323423251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 26.

The square root of 1323423251 is about 36378.8846860373. The cubic root of 1323423251 is about 1097.9087681594.

Adding to 1323423251 its reverse (1523243231), we get a palindrome (2846666482).

The spelling of 1323423251 in words is "one billion, three hundred twenty-three million, four hundred twenty-three thousand, two hundred fifty-one".