1301240320 has 40 divisors (see below), whose sum is σ = 3119933124. Its totient is φ = 520495104.

The previous prime is 1301240293. The next prime is 1301240371. The reversal of 1301240320 is 230421031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1186664704 + 114575616 = 34448^2 + 10704^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1301240294 and 1301240303.

It is an unprimeable number.

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, 251589 + ... + 256708.

Almost surely, 2^1301240320 is an apocalyptic number.

1301240320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301240320 is an abundant number, since it is smaller than the sum of its proper divisors (1818692804).

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

1301240320 is an frugal number, since it uses more digits than its factorization.

1301240320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508320 (or 508304 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1301240320 is about 36072.7087976492. The cubic root of 1301240320 is about 1091.7398692503.

Adding to 1301240320 its reverse (230421031), we get a palindrome (1531661351).

The spelling of 1301240320 in words is "one billion, three hundred one million, two hundred forty thousand, three hundred twenty".