1213031203 has 8 divisors (see below), whose sum is σ = 1217756160. Its totient is φ = 1208314440.

The previous prime is 1213031173. The next prime is 1213031219. The reversal of 1213031203 is 3021303121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213031203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213031233) 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, 548526 + ... + 550732.

It is an arithmetic number, because the mean of its divisors is an integer number (152219520).

Almost surely, 2^1213031203 is an apocalyptic number.

1213031203 is a deficient number, since it is larger than the sum of its proper divisors (4724957).

1213031203 is a wasteful number, since it uses less digits than its factorization.

1213031203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1213031203 is about 34828.5974882710. The cubic root of 1213031203 is about 1066.4913175410.

Adding to 1213031203 its reverse (3021303121), we get a palindrome (4234334324).

The spelling of 1213031203 in words is "one billion, two hundred thirteen million, thirty-one thousand, two hundred three".