1203116603 has 32 divisors (see below), whose sum is σ = 1374912000. Its totient is φ = 1045094400.

The previous prime is 1203116581. The next prime is 1203116609. The reversal of 1203116603 is 3066113021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1203116603 - 2¹⁸ = 1202854459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1203116609) 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 31 ways as a sum of consecutive naturals, for example, 2679323 + ... + 2679771.

It is an arithmetic number, because the mean of its divisors is an integer number (42966000).

Almost surely, 2^1203116603 is an apocalyptic number.

1203116603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1203116603 is a deficient number, since it is larger than the sum of its proper divisors (171795397).

1203116603 is a wasteful number, since it uses less digits than its factorization.

1203116603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1203116603 is about 34685.9712708178. The cubic root of 1203116603 is about 1063.5777419158.

Adding to 1203116603 its reverse (3066113021), we get a palindrome (4269229624).

The spelling of 1203116603 in words is "one billion, two hundred three million, one hundred sixteen thousand, six hundred three".