1213311203 has 8 divisors (see below), whose sum is σ = 1363453728. Its totient is φ = 1071284544.

The previous prime is 1213311191. The next prime is 1213311217. The reversal of 1213311203 is 3021133121.

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 1213311203 - 2²⁰ = 1212262627 is a prime.

It is a super-3 number, since 3×1213311203³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213311293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028650 + ... + 2029247.

It is an arithmetic number, because the mean of its divisors is an integer number (170431716).

Almost surely, 2^1213311203 is an apocalyptic number.

1213311203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1213311203 is a deficient number, since it is larger than the sum of its proper divisors (150142525).

1213311203 is a wasteful number, since it uses less digits than its factorization.

1213311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4057933.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1213311203 is about 34832.6169415966. The cubic root of 1213311203 is about 1066.5733694549.

Adding to 1213311203 its reverse (3021133121), we get a palindrome (4234444324).

The spelling of 1213311203 in words is "one billion, two hundred thirteen million, three hundred eleven thousand, two hundred three".