1203312103 has 4 divisors (see below), whose sum is σ = 1375213840. Its totient is φ = 1031410368.

The previous prime is 1203312079. The next prime is 1203312107. The reversal of 1203312103 is 3012133021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3012133021 = 6709 ⋅448969.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203312103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203312107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85950858 + ... + 85950871.

It is an arithmetic number, because the mean of its divisors is an integer number (343803460).

Almost surely, 2^1203312103 is an apocalyptic number.

1203312103 is a deficient number, since it is larger than the sum of its proper divisors (171901737).

1203312103 is an equidigital number, since it uses as much as digits as its factorization.

1203312103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171901736.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1203312103 is about 34688.7892985616. The cubic root of 1203312103 is about 1063.6353473567.

Adding to 1203312103 its reverse (3012133021), we get a palindrome (4215445124).

The spelling of 1203312103 in words is "one billion, two hundred three million, three hundred twelve thousand, one hundred three".