1201230320 has 20 divisors (see below), whose sum is σ = 2792860680. Its totient is φ = 480492096.

The previous prime is 1201230301. The next prime is 1201230379. The reversal of 1201230320 is 230321021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1201230295 and 1201230304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7507610 + ... + 7507769.

It is an arithmetic number, because the mean of its divisors is an integer number (139643034).

Almost surely, 2^1201230320 is an apocalyptic number.

1201230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201230320 is an abundant number, since it is smaller than the sum of its proper divisors (1591630360).

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

1201230320 is a wasteful number, since it uses less digits than its factorization.

1201230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15015392 (or 15015386 counting only the distinct ones).

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

The square root of 1201230320 is about 34658.7697415820. The cubic root of 1201230320 is about 1063.0216146078.

Adding to 1201230320 its reverse (230321021), we get a palindrome (1431551341).

The spelling of 1201230320 in words is "one billion, two hundred one million, two hundred thirty thousand, three hundred twenty".