1243230211103 has 4 divisors (see below), whose sum is σ = 1243233590928. Its totient is φ = 1243226831280.

The previous prime is 1243230211061. The next prime is 1243230211151. The reversal of 1243230211103 is 3011120323421.

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 1243230211103 - 2¹⁶ = 1243230145567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243230211163) 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, 1059851 + ... + 1899932.

It is an arithmetic number, because the mean of its divisors is an integer number (310808397732).

Almost surely, 2^{1243230211103} is an apocalyptic number.

1243230211103 is a deficient number, since it is larger than the sum of its proper divisors (3379825).

1243230211103 is an equidigital number, since it uses as much as digits as its factorization.

1243230211103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379824.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1243230211103 its reverse (3011120323421), we get a palindrome (4254350534524).

The spelling of 1243230211103 in words is "one trillion, two hundred forty-three billion, two hundred thirty million, two hundred eleven thousand, one hundred three".