2120321523 has 8 divisors (see below), whose sum is σ = 2853517248. Its totient is φ = 1400336744.

The previous prime is 2120321521. The next prime is 2120321537. The reversal of 2120321523 is 3251230212.

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 2120321523 - 2¹ = 2120321521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2120321523.

It is not an unprimeable number, because it can be changed into a prime (2120321521) 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, 3302361 + ... + 3303002.

It is an arithmetic number, because the mean of its divisors is an integer number (356689656).

Almost surely, 2^2120321523 is an apocalyptic number.

2120321523 is a deficient number, since it is larger than the sum of its proper divisors (733195725).

2120321523 is a wasteful number, since it uses less digits than its factorization.

2120321523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6605473.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2120321523 is about 46046.9491171782. The cubic root of 2120321523 is about 1284.6965976096.

Adding to 2120321523 its reverse (3251230212), we get a palindrome (5371551735).

The spelling of 2120321523 in words is "two billion, one hundred twenty million, three hundred twenty-one thousand, five hundred twenty-three".