1301220320 has 48 divisors (see below), whose sum is σ = 3235937040. Its totient is φ = 493092864.

The previous prime is 1301220311. The next prime is 1301220353. The reversal of 1301220320 is 230221031.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1301220295 and 1301220304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210977 + ... + 217056.

It is an arithmetic number, because the mean of its divisors is an integer number (67415355).

Almost surely, 2^1301220320 is an apocalyptic number.

1301220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301220320 is an abundant number, since it is smaller than the sum of its proper divisors (1934716720).

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

1301220320 is a wasteful number, since it uses less digits than its factorization.

1301220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428067 (or 428059 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1301220320 is about 36072.4315787001. The cubic root of 1301220320 is about 1091.7342758922.

Adding to 1301220320 its reverse (230221031), we get a palindrome (1531441351).

The spelling of 1301220320 in words is "one billion, three hundred one million, two hundred twenty thousand, three hundred twenty".