1203551310403 has 16 divisors (see below), whose sum is σ = 1304592392320. Its totient is φ = 1110296611008.

The previous prime is 1203551310349. The next prime is 1203551310407. The reversal of 1203551310403 is 3040131553021.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1203551310403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203551310407) 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 15 ways as a sum of consecutive naturals, for example, 3475126 + ... + 3805732.

It is an arithmetic number, because the mean of its divisors is an integer number (81537024520).

Almost surely, 2^{1203551310403} is an apocalyptic number.

1203551310403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1203551310403 is a deficient number, since it is larger than the sum of its proper divisors (101041081917).

1203551310403 is an equidigital number, since it uses as much as digits as its factorization.

1203551310403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332303 (or 332277 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 1203551310403 its reverse (3040131553021), we get a palindrome (4243682863424).

The spelling of 1203551310403 in words is "one trillion, two hundred three billion, five hundred fifty-one million, three hundred ten thousand, four hundred three".