1220320231323 has 8 divisors (see below), whose sum is σ = 1722805032528. Its totient is φ = 765691125504.

The previous prime is 1220320231279. The next prime is 1220320231337. The reversal of 1220320231323 is 3231320230221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220320231323 - 2⁶ = 1220320231259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220320231293 and 1220320231302.

It is not an unprimeable number, because it can be changed into a prime (1220320232323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11963923786 + ... + 11963923887.

It is an arithmetic number, because the mean of its divisors is an integer number (215350629066).

Almost surely, 2^{1220320231323} is an apocalyptic number.

1220320231323 is a deficient number, since it is larger than the sum of its proper divisors (502484801205).

1220320231323 is a wasteful number, since it uses less digits than its factorization.

1220320231323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23927847693.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 1220320231323 its reverse (3231320230221), we get a palindrome (4451640461544).

The spelling of 1220320231323 in words is "one trillion, two hundred twenty billion, three hundred twenty million, two hundred thirty-one thousand, three hundred twenty-three".