1213301203 has 4 divisors (see below), whose sum is σ = 1284671880. Its totient is φ = 1141930528.

The previous prime is 1213301137. The next prime is 1213301207. The reversal of 1213301203 is 3021033121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3021033121 = 1459 ⋅2070619.

It is a de Polignac number, because none of the positive numbers 2^k-1213301203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213301207) 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, 35685313 + ... + 35685346.

It is an arithmetic number, because the mean of its divisors is an integer number (321167970).

Almost surely, 2^1213301203 is an apocalyptic number.

1213301203 is a deficient number, since it is larger than the sum of its proper divisors (71370677).

1213301203 is an equidigital number, since it uses as much as digits as its factorization.

1213301203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71370676.

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

The square root of 1213301203 is about 34832.4733976788. The cubic root of 1213301203 is about 1066.5704392468.

Adding to 1213301203 its reverse (3021033121), we get a palindrome (4234334324).

The spelling of 1213301203 in words is "one billion, two hundred thirteen million, three hundred one thousand, two hundred three".