1301323403 has 4 divisors (see below), whose sum is σ = 1302713160. Its totient is φ = 1299933648.

The previous prime is 1301323391. The next prime is 1301323427. The reversal of 1301323403 is 3043231031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3043231031 = 9973 ⋅305147.

It is a cyclic number.

It is not a de Polignac number, because 1301323403 - 2⁶ = 1301323339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301323483) 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, 693473 + ... + 695346.

It is an arithmetic number, because the mean of its divisors is an integer number (325678290).

Almost surely, 2^1301323403 is an apocalyptic number.

1301323403 is a deficient number, since it is larger than the sum of its proper divisors (1389757).

1301323403 is an equidigital number, since it uses as much as digits as its factorization.

1301323403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389756.

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

The square root of 1301323403 is about 36073.8603839401. The cubic root of 1301323403 is about 1091.7631042853.

Adding to 1301323403 its reverse (3043231031), we get a palindrome (4344554434).

The spelling of 1301323403 in words is "one billion, three hundred one million, three hundred twenty-three thousand, four hundred three".