1303121110323 has 4 divisors (see below), whose sum is σ = 1737494813768. Its totient is φ = 868747406880.

The previous prime is 1303121110309. The next prime is 1303121110339. The reversal of 1303121110323 is 3230111213031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1303121110323 - 2²⁸ = 1302852674867 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 1303121110323.

It is not an unprimeable number, because it can be changed into a prime (1303121110523) 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, 217186851718 + ... + 217186851723.

It is an arithmetic number, because the mean of its divisors is an integer number (434373703442).

Almost surely, 2^{1303121110323} is an apocalyptic number.

1303121110323 is a deficient number, since it is larger than the sum of its proper divisors (434373703445).

1303121110323 is an equidigital number, since it uses as much as digits as its factorization.

1303121110323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434373703444.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1303121110323 its reverse (3230111213031), we get a palindrome (4533232323354).

The spelling of 1303121110323 in words is "one trillion, three hundred three billion, one hundred twenty-one million, one hundred ten thousand, three hundred twenty-three".