323040551 has 2 divisors, whose sum is σ = 323040552. Its totient is φ = 323040550.

The previous prime is 323040479. The next prime is 323040569. The reversal of 323040551 is 155040323.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323040551 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323040581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161520275 + 161520276.

It is an arithmetic number, because the mean of its divisors is an integer number (161520276).

Almost surely, 2^323040551 is an apocalyptic number.

323040551 is a deficient number, since it is larger than the sum of its proper divisors (1).

323040551 is an equidigital number, since it uses as much as digits as its factorization.

323040551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 323040551 is about 17973.3288792032. The cubic root of 323040551 is about 686.1499153866.

Adding to 323040551 its reverse (155040323), we get a palindrome (478080874).

The spelling of 323040551 in words is "three hundred twenty-three million, forty thousand, five hundred fifty-one".