1323111321323 has 16 divisors (see below), whose sum is σ = 1496106284544. Its totient is φ = 1159665656160.

The previous prime is 1323111321319. The next prime is 1323111321383. The reversal of 1323111321323 is 3231231113231.

It is not a de Polignac number, because 1323111321323 - 2² = 1323111321319 is a prime.

It is a super-2 number, since 2×1323111321323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323111321292 and 1323111321301.

It is not an unprimeable number, because it can be changed into a prime (1323111321313) 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, 19063940 + ... + 19133217.

It is an arithmetic number, because the mean of its divisors is an integer number (93506642784).

Almost surely, 2^{1323111321323} is an apocalyptic number.

1323111321323 is a deficient number, since it is larger than the sum of its proper divisors (172994963221).

1323111321323 is a wasteful number, since it uses less digits than its factorization.

1323111321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38197282.

The product of its digits is 1944, while the sum is 26.

Adding to 1323111321323 its reverse (3231231113231), we get a palindrome (4554342434554).

The spelling of 1323111321323 in words is "one trillion, three hundred twenty-three billion, one hundred eleven million, three hundred twenty-one thousand, three hundred twenty-three".