1303121411 has 4 divisors (see below), whose sum is σ = 1307311824. Its totient is φ = 1298931000.

The previous prime is 1303121401. The next prime is 1303121423. The reversal of 1303121411 is 1141213031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1141213031 = 7 ⋅163030433.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1303121411 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 1303121411.

It is not an unprimeable number, because it can be changed into a prime (1303121401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2094740 + ... + 2095361.

It is an arithmetic number, because the mean of its divisors is an integer number (326827956).

Almost surely, 2^1303121411 is an apocalyptic number.

1303121411 is a deficient number, since it is larger than the sum of its proper divisors (4190413).

1303121411 is an equidigital number, since it uses as much as digits as its factorization.

1303121411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4190412.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1303121411 is about 36098.7729846874. The cubic root of 1303121411 is about 1092.2656940356.

Adding to 1303121411 its reverse (1141213031), we get a palindrome (2444334442).

The spelling of 1303121411 in words is "one billion, three hundred three million, one hundred twenty-one thousand, four hundred eleven".