1300144321 has 4 divisors (see below), whose sum is σ = 1485879232. Its totient is φ = 1114409412.

The previous prime is 1300144319. The next prime is 1300144337. The reversal of 1300144321 is 1234410031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1234410031 = 19 ⋅64968949.

It is a cyclic number.

It is not a de Polignac number, because 1300144321 - 2¹ = 1300144319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1300144421) 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, 92867445 + ... + 92867458.

It is an arithmetic number, because the mean of its divisors is an integer number (371469808).

Almost surely, 2^1300144321 is an apocalyptic number.

It is an amenable number.

1300144321 is a deficient number, since it is larger than the sum of its proper divisors (185734911).

1300144321 is an equidigital number, since it uses as much as digits as its factorization.

1300144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185734910.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1300144321 is about 36057.5140712723. The cubic root of 1300144321 is about 1091.4332689801.

Adding to 1300144321 its reverse (1234410031), we get a palindrome (2534554352).

The spelling of 1300144321 in words is "one billion, three hundred million, one hundred forty-four thousand, three hundred twenty-one".