1213232303 has 4 divisors (see below), whose sum is σ = 1213566288. Its totient is φ = 1212898320.

The previous prime is 1213232299. The next prime is 1213232311. The reversal of 1213232303 is 3032323121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3032323121 = 4507 ⋅672803.

It is a cyclic number.

It is not a de Polignac number, because 1213232303 - 2² = 1213232299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213232203) 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, 161483 + ... + 168828.

It is an arithmetic number, because the mean of its divisors is an integer number (303391572).

Almost surely, 2^1213232303 is an apocalyptic number.

1213232303 is a deficient number, since it is larger than the sum of its proper divisors (333985).

1213232303 is an equidigital number, since it uses as much as digits as its factorization.

1213232303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333984.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1213232303 is about 34831.4843640061. The cubic root of 1213232303 is about 1066.5502496752.

Adding to 1213232303 its reverse (3032323121), we get a palindrome (4245555424).

The spelling of 1213232303 in words is "one billion, two hundred thirteen million, two hundred thirty-two thousand, three hundred three".