1323001011 has 4 divisors (see below), whose sum is σ = 1764001352. Its totient is φ = 882000672.

The previous prime is 1323000953. The next prime is 1323001033. The reversal of 1323001011 is 1101003231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101003231 = 3 ⋅367001077.

It is not a de Polignac number, because 1323001011 - 2⁶ = 1323000947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323001061) 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, 220500166 + ... + 220500171.

It is an arithmetic number, because the mean of its divisors is an integer number (441000338).

Almost surely, 2^1323001011 is an apocalyptic number.

1323001011 is a deficient number, since it is larger than the sum of its proper divisors (441000341).

1323001011 is an equidigital number, since it uses as much as digits as its factorization.

1323001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441000340.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1323001011 is about 36373.0808565895. The cubic root of 1323001011 is about 1097.7919926408.

Adding to 1323001011 its reverse (1101003231), we get a palindrome (2424004242).

The spelling of 1323001011 in words is "one billion, three hundred twenty-three million, one thousand, eleven".