1003120213 has 4 divisors (see below), whose sum is σ = 1004086720. Its totient is φ = 1002153708.

The previous prime is 1003120177. The next prime is 1003120243. The reversal of 1003120213 is 3120213001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1003120213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003120193 and 1003120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003120243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481695 + ... + 483772.

It is an arithmetic number, because the mean of its divisors is an integer number (251021680).

Almost surely, 2^1003120213 is an apocalyptic number.

It is an amenable number.

1003120213 is a deficient number, since it is larger than the sum of its proper divisors (966507).

1003120213 is an equidigital number, since it uses as much as digits as its factorization.

1003120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966506.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1003120213 is about 31672.0730770816. The cubic root of 1003120213 is about 1001.0389911236.

Adding to 1003120213 its reverse (3120213001), we get a palindrome (4123333214).

The spelling of 1003120213 in words is "one billion, three million, one hundred twenty thousand, two hundred thirteen".