120521311 has 8 divisors (see below), whose sum is σ = 128135520. Its totient is φ = 113104992.

The previous prime is 120521309. The next prime is 120521329. The reversal of 120521311 is 113125021.

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 120521311 - 2¹ = 120521309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120521341) 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, 48216 + ... + 50653.

It is an arithmetic number, because the mean of its divisors is an integer number (16016940).

Almost surely, 2^120521311 is an apocalyptic number.

120521311 is a deficient number, since it is larger than the sum of its proper divisors (7614209).

120521311 is an equidigital number, since it uses as much as digits as its factorization.

120521311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98945.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 120521311 is about 10978.2198465872. The cubic root of 120521311 is about 493.9556405392.

Adding to 120521311 its reverse (113125021), we get a palindrome (233646332).

The spelling of 120521311 in words is "one hundred twenty million, five hundred twenty-one thousand, three hundred eleven".