1323111013331 has 4 divisors (see below), whose sum is σ = 1380637579152. Its totient is φ = 1265584447512.

The previous prime is 1323111013321. The next prime is 1323111013397. The reversal of 1323111013331 is 1333101113231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1323111013331 - 2⁶ = 1323111013267 is a prime.

It is a super-2 number, since 2×1323111013331² (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), and also a Moran number because the ratio is a prime number: 57526565797 = 1323111013331 / (1 + 3 + 2 + 3 + 1 + 1 + 1 + 0 + 1 + 3 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323111013297 and 1323111013306.

It is not an unprimeable number, because it can be changed into a prime (1323111013321) 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, 28763282876 + ... + 28763282921.

It is an arithmetic number, because the mean of its divisors is an integer number (345159394788).

Almost surely, 2^{1323111013331} is an apocalyptic number.

1323111013331 is a deficient number, since it is larger than the sum of its proper divisors (57526565821).

1323111013331 is an equidigital number, since it uses as much as digits as its factorization.

1323111013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57526565820.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1323111013331 its reverse (1333101113231), we get a palindrome (2656212126562).

The spelling of 1323111013331 in words is "one trillion, three hundred twenty-three billion, one hundred eleven million, thirteen thousand, three hundred thirty-one".