1213003203 has 8 divisors (see below), whose sum is σ = 1617881616. Its totient is φ = 808396800.

The previous prime is 1213003199. The next prime is 1213003229. The reversal of 1213003203 is 3023003121.

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

It is not a de Polignac number, because 1213003203 - 2² = 1213003199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213003283) 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, 57358 + ... + 75603.

It is an arithmetic number, because the mean of its divisors is an integer number (202235202).

Almost surely, 2^1213003203 is an apocalyptic number.

1213003203 is a deficient number, since it is larger than the sum of its proper divisors (404878413).

1213003203 is a wasteful number, since it uses less digits than its factorization.

1213003203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136005.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1213003203 is about 34828.1955174252. The cubic root of 1213003203 is about 1066.4831116552.

Adding to 1213003203 its reverse (3023003121), we get a palindrome (4236006324).

The spelling of 1213003203 in words is "one billion, two hundred thirteen million, three thousand, two hundred three".