1323001011003 has 16 divisors (see below), whose sum is σ = 2019544619520. Its totient is φ = 754671923136.

The previous prime is 1323001010999. The next prime is 1323001011019. The reversal of 1323001011003 is 3001101003231.

It is not a de Polignac number, because 1323001011003 - 2² = 1323001010999 is a prime.

It is a super-2 number, since 2×1323001011003² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1323001011043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55348375 + ... + 55372272.

It is an arithmetic number, because the mean of its divisors is an integer number (126221538720).

Almost surely, 2^{1323001011003} is an apocalyptic number.

1323001011003 is a deficient number, since it is larger than the sum of its proper divisors (696543608517).

1323001011003 is a wasteful number, since it uses less digits than its factorization.

1323001011003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110721226.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 1323001011003 its reverse (3001101003231), we get a palindrome (4324102014234).

The spelling of 1323001011003 in words is "one trillion, three hundred twenty-three billion, one million, eleven thousand, three".