120312320 has 40 divisors (see below), whose sum is σ = 288473724. Its totient is φ = 48123904.

The previous prime is 120312289. The next prime is 120312359. The reversal of 120312320 is 23213021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 119421184 + 891136 = 10928^2 + 944^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 120312295 and 120312304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20939 + ... + 26058.

Almost surely, 2^120312320 is an apocalyptic number.

120312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120312320 is an abundant number, since it is smaller than the sum of its proper divisors (168161404).

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

120312320 is an frugal number, since it uses more digits than its factorization.

120312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47020 (or 47004 counting only the distinct ones).

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

The square root of 120312320 is about 10968.6972790756. The cubic root of 120312320 is about 493.6699593590.

Adding to 120312320 its reverse (23213021), we get a palindrome (143525341).

The spelling of 120312320 in words is "one hundred twenty million, three hundred twelve thousand, three hundred twenty".