1223240312323 has 4 divisors (see below), whose sum is σ = 1224245441160. Its totient is φ = 1222235183488.

The previous prime is 1223240312309. The next prime is 1223240312351. The reversal of 1223240312323 is 3232130423221.

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 1223240312323 - 2¹³ = 1223240304131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223240312291 and 1223240312300.

It is not an unprimeable number, because it can be changed into a prime (1223240312123) 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, 502562593 + ... + 502565026.

It is an arithmetic number, because the mean of its divisors is an integer number (306061360290).

Almost surely, 2^{1223240312323} is an apocalyptic number.

1223240312323 is a deficient number, since it is larger than the sum of its proper divisors (1005128837).

1223240312323 is a wasteful number, since it uses less digits than its factorization.

1223240312323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005128836.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 1223240312323 its reverse (3232130423221), we get a palindrome (4455370735544).

The spelling of 1223240312323 in words is "one trillion, two hundred twenty-three billion, two hundred forty million, three hundred twelve thousand, three hundred twenty-three".