1323865201 has 4 divisors (see below), whose sum is σ = 1323938304. Its totient is φ = 1323792100.

The previous prime is 1323865177. The next prime is 1323865229. The reversal of 1323865201 is 1025683231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1025683231 = 1783 ⋅575257.

It is a cyclic number.

It is not a de Polignac number, because 1323865201 - 2¹³ = 1323857009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323865241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13056 + ... + 53086.

It is an arithmetic number, because the mean of its divisors is an integer number (330984576).

Almost surely, 2^1323865201 is an apocalyptic number.

It is an amenable number.

1323865201 is a deficient number, since it is larger than the sum of its proper divisors (73103).

1323865201 is an equidigital number, since it uses as much as digits as its factorization.

1323865201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73102.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1323865201 is about 36384.9584443902. The cubic root of 1323865201 is about 1098.0309681125.

The spelling of 1323865201 in words is "one billion, three hundred twenty-three million, eight hundred sixty-five thousand, two hundred one".