1243443020023 has 8 divisors (see below), whose sum is σ = 1297615107168. Its totient is φ = 1189280045184.

The previous prime is 1243443020011. The next prime is 1243443020089. The reversal of 1243443020023 is 3200203443421.

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

It is a cyclic number.

It is not a de Polignac number, because 1243443020023 - 2¹³ = 1243443011831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1243443019973 and 1243443020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243443023023) 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, 1998486 + ... + 2545747.

It is an arithmetic number, because the mean of its divisors is an integer number (162201888396).

Almost surely, 2^{1243443020023} is an apocalyptic number.

1243443020023 is a deficient number, since it is larger than the sum of its proper divisors (54172087145).

1243443020023 is a wasteful number, since it uses less digits than its factorization.

1243443020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556153.

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

Adding to 1243443020023 its reverse (3200203443421), we get a palindrome (4443646463444).

The spelling of 1243443020023 in words is "one trillion, two hundred forty-three billion, four hundred forty-three million, twenty thousand, twenty-three".