1213434200243 has 4 divisors (see below), whose sum is σ = 1215089636448. Its totient is φ = 1211778764040.

The previous prime is 1213434200213. The next prime is 1213434200263. The reversal of 1213434200243 is 3420024343121.

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 1213434200243 - 2⁶ = 1213434200179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213434200213) 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, 827717003 + ... + 827718468.

It is an arithmetic number, because the mean of its divisors is an integer number (303772409112).

Almost surely, 2^{1213434200243} is an apocalyptic number.

1213434200243 is a deficient number, since it is larger than the sum of its proper divisors (1655436205).

1213434200243 is an equidigital number, since it uses as much as digits as its factorization.

1213434200243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655436204.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 1213434200243 its reverse (3420024343121), we get a palindrome (4633458543364).

The spelling of 1213434200243 in words is "one trillion, two hundred thirteen billion, four hundred thirty-four million, two hundred thousand, two hundred forty-three".