1301321321 has 8 divisors (see below), whose sum is σ = 1425382920. Its totient is φ = 1182539008.

The previous prime is 1301321293. The next prime is 1301321323. The reversal of 1301321321 is 1231231031.

It can be written as a sum of positive squares in 4 ways, for example, as 303456400 + 997864921 = 17420^2 + 31589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1301321321 - 2⁶ = 1301321257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 1301321321.

It is not an unprimeable number, because it can be changed into a prime (1301321323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319306 + ... + 1320291.

It is an arithmetic number, because the mean of its divisors is an integer number (178172865).

Almost surely, 2^1301321321 is an apocalyptic number.

It is an amenable number.

1301321321 is a deficient number, since it is larger than the sum of its proper divisors (124061599).

1301321321 is a wasteful number, since it uses less digits than its factorization.

1301321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639643.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1301321321 is about 36073.8315264680. The cubic root of 1301321321 is about 1091.7625220442.

Adding to 1301321321 its reverse (1231231031), we get a palindrome (2532552352).

The spelling of 1301321321 in words is "one billion, three hundred one million, three hundred twenty-one thousand, three hundred twenty-one".