2120453531 has 8 divisors (see below), whose sum is σ = 2441065440. Its totient is φ = 1804264128.

The previous prime is 2120453527. The next prime is 2120453549. The reversal of 2120453531 is 1353540212.

It is a happy number.

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 2120453531 - 2² = 2120453527 is a prime.

It is a super-2 number, since 2×2120453531² = 8992646354260735922, which contains 22 as substring.

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 2120453531.

It is not an unprimeable number, because it can be changed into a prime (2120453591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104596 + ... + 1106513.

It is an arithmetic number, because the mean of its divisors is an integer number (305133180).

Almost surely, 2^2120453531 is an apocalyptic number.

2120453531 is a deficient number, since it is larger than the sum of its proper divisors (320611909).

2120453531 is a wasteful number, since it uses less digits than its factorization.

2120453531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211253.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2120453531 is about 46048.3825014517. The cubic root of 2120453531 is about 1284.7232581431.

Adding to 2120453531 its reverse (1353540212), we get a palindrome (3473993743).

The spelling of 2120453531 in words is "two billion, one hundred twenty million, four hundred fifty-three thousand, five hundred thirty-one".