1323166001 has 2 divisors, whose sum is σ = 1323166002. Its totient is φ = 1323166000.

The previous prime is 1323165989. The next prime is 1323166027. The reversal of 1323166001 is 1006613231.

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., 1292474401 + 30691600 = 35951^2 + 5540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323166001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323166081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661583000 + 661583001.

It is an arithmetic number, because the mean of its divisors is an integer number (661583001).

Almost surely, 2^1323166001 is an apocalyptic number.

It is an amenable number.

1323166001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323166001 is an equidigital number, since it uses as much as digits as its factorization.

1323166001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1323166001 is about 36375.3488093242. The cubic root of 1323166001 is about 1097.8376255543.

Adding to 1323166001 its reverse (1006613231), we get a palindrome (2329779232).

The spelling of 1323166001 in words is "one billion, three hundred twenty-three million, one hundred sixty-six thousand, one".