1200231320 has 32 divisors (see below), whose sum is σ = 2701548720. Its totient is φ = 479909760.

The previous prime is 1200231281. The next prime is 1200231413. The reversal of 1200231320 is 231320021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200231295 and 1200231304.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 160055 + ... + 167385.

Almost surely, 2^1200231320 is an apocalyptic number.

1200231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200231320 is an abundant number, since it is smaller than the sum of its proper divisors (1501317400).

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

1200231320 is a wasteful number, since it uses less digits than its factorization.

1200231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11435 (or 11431 counting only the distinct ones).

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

The square root of 1200231320 is about 34644.3548070966. The cubic root of 1200231320 is about 1062.7268465123.

Adding to 1200231320 its reverse (231320021), we get a palindrome (1431551341).

The spelling of 1200231320 in words is "one billion, two hundred million, two hundred thirty-one thousand, three hundred twenty".