1303121323 has 4 divisors (see below), whose sum is σ = 1489281520. Its totient is φ = 1116961128.

The previous prime is 1303121263. The next prime is 1303121329. The reversal of 1303121323 is 3231213031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3231213031 = 29 ⋅111421139.

It is a cyclic number.

It is not a de Polignac number, because 1303121323 - 2⁹ = 1303120811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1303121323.

It is not an unprimeable number, because it can be changed into a prime (1303121329) 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, 93080088 + ... + 93080101.

It is an arithmetic number, because the mean of its divisors is an integer number (372320380).

Almost surely, 2^1303121323 is an apocalyptic number.

1303121323 is a deficient number, since it is larger than the sum of its proper divisors (186160197).

1303121323 is an equidigital number, since it uses as much as digits as its factorization.

1303121323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186160196.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1303121323 is about 36098.7717658094. The cubic root of 1303121323 is about 1092.2656694487.

Adding to 1303121323 its reverse (3231213031), we get a palindrome (4534334354).

The spelling of 1303121323 in words is "one billion, three hundred three million, one hundred twenty-one thousand, three hundred twenty-three".