1213312330203 has 4 divisors (see below), whose sum is σ = 1617749773608. Its totient is φ = 808874886800.

The previous prime is 1213312330157. The next prime is 1213312330213. The reversal of 1213312330203 is 3020332133121.

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 1213312330203 - 2¹³ = 1213312322011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213312330213) 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, 202218721698 + ... + 202218721703.

It is an arithmetic number, because the mean of its divisors is an integer number (404437443402).

Almost surely, 2^{1213312330203} is an apocalyptic number.

1213312330203 is a deficient number, since it is larger than the sum of its proper divisors (404437443405).

1213312330203 is an equidigital number, since it uses as much as digits as its factorization.

1213312330203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404437443404.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1213312330203 its reverse (3020332133121), we get a palindrome (4233644463324).

The spelling of 1213312330203 in words is "one trillion, two hundred thirteen billion, three hundred twelve million, three hundred thirty thousand, two hundred three".