1321301344 has 96 divisors (see below), whose sum is σ = 3083996160. Its totient is φ = 550540800.

The previous prime is 1321301341. The next prime is 1321301347. The reversal of 1321301344 is 4431031231.

It is an interprime number because it is at equal distance from previous prime (1321301341) and next prime (1321301347).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321301341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204142 + ... + 210514.

It is an arithmetic number, because the mean of its divisors is an integer number (32124960).

Almost surely, 2^1321301344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321301344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1541998080).

1321301344 is an abundant number, since it is smaller than the sum of its proper divisors (1762694816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321301344 is a wasteful number, since it uses less digits than its factorization.

1321301344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444 (or 6436 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1321301344 is about 36349.7089947086. The cubic root of 1321301344 is about 1097.3216779512.

Adding to 1321301344 its reverse (4431031231), we get a palindrome (5752332575).

The spelling of 1321301344 in words is "one billion, three hundred twenty-one million, three hundred one thousand, three hundred forty-four".