1303223123 has 4 divisors (see below), whose sum is σ = 1308178608. Its totient is φ = 1298267640.

The previous prime is 1303223113. The next prime is 1303223149. The reversal of 1303223123 is 3213223031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3213223031 = 43 ⋅74726117.

It is a cyclic number.

It is not a de Polignac number, because 1303223123 - 2⁴ = 1303223107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303223095 and 1303223104.

It is not an unprimeable number, because it can be changed into a prime (1303223113) 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, 2477348 + ... + 2477873.

It is an arithmetic number, because the mean of its divisors is an integer number (327044652).

Almost surely, 2^1303223123 is an apocalyptic number.

1303223123 is a deficient number, since it is larger than the sum of its proper divisors (4955485).

1303223123 is an equidigital number, since it uses as much as digits as its factorization.

1303223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955484.

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

The square root of 1303223123 is about 36100.1817585452. The cubic root of 1303223123 is about 1092.2941113514.

Adding to 1303223123 its reverse (3213223031), we get a palindrome (4516446154).

The spelling of 1303223123 in words is "one billion, three hundred three million, two hundred twenty-three thousand, one hundred twenty-three".