1243020242323 has 4 divisors (see below), whose sum is σ = 1308442360360. Its totient is φ = 1177598124288.

The previous prime is 1243020242309. The next prime is 1243020242383. The reversal of 1243020242323 is 3232420203421.

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 1243020242323 - 2¹⁷ = 1243020111251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1243020242291 and 1243020242300.

It is not an unprimeable number, because it can be changed into a prime (1243020242383) 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, 32711058990 + ... + 32711059027.

It is an arithmetic number, because the mean of its divisors is an integer number (327110590090).

Almost surely, 2^{1243020242323} is an apocalyptic number.

1243020242323 is a deficient number, since it is larger than the sum of its proper divisors (65422118037).

1243020242323 is an equidigital number, since it uses as much as digits as its factorization.

1243020242323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65422118036.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 1243020242323 its reverse (3232420203421), we get a palindrome (4475440445744).

The spelling of 1243020242323 in words is "one trillion, two hundred forty-three billion, twenty million, two hundred forty-two thousand, three hundred twenty-three".