120531520305 has 216 divisors, whose sum is σ = 251882759232. Its totient is φ = 53146824192.

The previous prime is 120531520301. The next prime is 120531520331. The reversal of 120531520305 is 503025135021.

It is a happy number.

120531520305 is a `hidden beast` number, since 1 + 20 + 5 + 315 + 20 + 305 = 666.

It is not a de Polignac number, because 120531520305 - 2² = 120531520301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120531520301) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 1170208884 + ... + 1170208986.

Almost surely, 2^120531520305 is an apocalyptic number.

120531520305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120531520305 is an abundant number, since it is smaller than the sum of its proper divisors (131351238927).

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

120531520305 is a wasteful number, since it uses less digits than its factorization.

120531520305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 120531520305 its reverse (503025135021), we get a palindrome (623556655326).

The spelling of 120531520305 in words is "one hundred twenty billion, five hundred thirty-one million, five hundred twenty thousand, three hundred five".