120565431361 has 8 divisors (see below), whose sum is σ = 127548728000. Its totient is φ = 113645909520.

The previous prime is 120565431359. The next prime is 120565431391. The reversal of 120565431361 is 163134565021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120565431361 - 2¹ = 120565431359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120565431361.

It is not an unprimeable number, because it can be changed into a prime (120565431331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15939810 + ... + 15947371.

It is an arithmetic number, because the mean of its divisors is an integer number (15943591000).

Almost surely, 2^120565431361 is an apocalyptic number.

It is an amenable number.

120565431361 is a deficient number, since it is larger than the sum of its proper divisors (6983296639).

120565431361 is a wasteful number, since it uses less digits than its factorization.

120565431361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31887399.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 120565431361 its reverse (163134565021), we get a palindrome (283699996382).

The spelling of 120565431361 in words is "one hundred twenty billion, five hundred sixty-five million, four hundred thirty-one thousand, three hundred sixty-one".