1203321213 has 12 divisors (see below), whose sum is σ = 1775112768. Its totient is φ = 785145480.

The previous prime is 1203321211. The next prime is 1203321227. The reversal of 1203321213 is 3121233021.

1203321213 is a `hidden beast` number, since 120 + 332 + 1 + 213 = 666.

It is not a de Polignac number, because 1203321213 - 2¹ = 1203321211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203321211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1421943 + ... + 1422788.

It is an arithmetic number, because the mean of its divisors is an integer number (147926064).

Almost surely, 2^1203321213 is an apocalyptic number.

It is an amenable number.

1203321213 is a deficient number, since it is larger than the sum of its proper divisors (571791555).

1203321213 is a wasteful number, since it uses less digits than its factorization.

1203321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844784 (or 2844781 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1203321213 is about 34688.9206087477. The cubic root of 1203321213 is about 1063.6380315297.

Adding to 1203321213 its reverse (3121233021), we get a palindrome (4324554234).

The spelling of 1203321213 in words is "one billion, two hundred three million, three hundred twenty-one thousand, two hundred thirteen".