1303121223 has 16 divisors (see below), whose sum is σ = 1962200800. Its totient is φ = 854504640.

The previous prime is 1303121203. The next prime is 1303121231. The reversal of 1303121223 is 3221213031.

1303121223 is a `hidden beast` number, since 130 + 312 + 1 + 223 = 666.

It is not a de Polignac number, because 1303121223 - 2⁵ = 1303121191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303121196 and 1303121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303121203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393958 + ... + 397251.

It is an arithmetic number, because the mean of its divisors is an integer number (122637550).

Almost surely, 2^1303121223 is an apocalyptic number.

1303121223 is a deficient number, since it is larger than the sum of its proper divisors (659079577).

1303121223 is an equidigital number, since it uses as much as digits as its factorization.

1303121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791279 (or 791273 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1303121223 is about 36098.7703807207. The cubic root of 1303121223 is about 1092.2656415089.

Adding to 1303121223 its reverse (3221213031), we get a palindrome (4524334254).

The spelling of 1303121223 in words is "one billion, three hundred three million, one hundred twenty-one thousand, two hundred twenty-three".