1211232803 has 16 divisors (see below), whose sum is σ = 1335398400. Its totient is φ = 1089475200.

The previous prime is 1211232793. The next prime is 1211232811. The reversal of 1211232803 is 3082321121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1211232803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211232853) 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 15 ways as a sum of consecutive naturals, for example, 416651 + ... + 419547.

It is an arithmetic number, because the mean of its divisors is an integer number (83462400).

Almost surely, 2^1211232803 is an apocalyptic number.

1211232803 is a deficient number, since it is larger than the sum of its proper divisors (124165597).

1211232803 is a wasteful number, since it uses less digits than its factorization.

1211232803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3298.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1211232803 is about 34802.7700477994. The cubic root of 1211232803 is about 1065.9640085963.

Adding to 1211232803 its reverse (3082321121), we get a palindrome (4293553924).

The spelling of 1211232803 in words is "one billion, two hundred eleven million, two hundred thirty-two thousand, eight hundred three".