1323312541 has 2 divisors, whose sum is σ = 1323312542. Its totient is φ = 1323312540.

The previous prime is 1323312493. The next prime is 1323312611. The reversal of 1323312541 is 1452133231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1154572441 + 168740100 = 33979^2 + 12990^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323312541 - 2²⁵ = 1289758109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323312041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661656270 + 661656271.

It is an arithmetic number, because the mean of its divisors is an integer number (661656271).

Almost surely, 2^1323312541 is an apocalyptic number.

It is an amenable number.

1323312541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323312541 is an equidigital number, since it uses as much as digits as its factorization.

1323312541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 1323312541 is about 36377.3630297744. The cubic root of 1323312541 is about 1097.8781523884.

Adding to 1323312541 its reverse (1452133231), we get a palindrome (2775445772).

The spelling of 1323312541 in words is "one billion, three hundred twenty-three million, three hundred twelve thousand, five hundred forty-one".