1323131003321 has 16 divisors (see below), whose sum is σ = 1456635417600. Its totient is φ = 1196261489808.

The previous prime is 1323131003317. The next prime is 1323131003323. The reversal of 1323131003321 is 1233001313231.

It is a cyclic number.

It is not a de Polignac number, because 1323131003321 - 2² = 1323131003317 is a prime.

It is a super-2 number, since 2×1323131003321² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323131003323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3256631 + ... + 3640316.

It is an arithmetic number, because the mean of its divisors is an integer number (91039713600).

Almost surely, 2^{1323131003321} is an apocalyptic number.

It is an amenable number.

1323131003321 is a deficient number, since it is larger than the sum of its proper divisors (133504414279).

1323131003321 is a wasteful number, since it uses less digits than its factorization.

1323131003321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6897428.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1323131003321 its reverse (1233001313231), we get a palindrome (2556132316552).

The spelling of 1323131003321 in words is "one trillion, three hundred twenty-three billion, one hundred thirty-one million, three thousand, three hundred twenty-one".