2120446531 has 24 divisors (see below), whose sum is σ = 2680258560. Its totient is φ = 1666299600.

The previous prime is 2120446511. The next prime is 2120446591. The reversal of 2120446531 is 1356440212.

It is a de Polignac number, because none of the positive numbers 2^k-2120446531 is a prime.

It is a super-2 number, since 2×2120446531² = 8992586981659867922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2120446531.

It is not an unprimeable number, because it can be changed into a prime (2120446511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7875 + ... + 65596.

It is an arithmetic number, because the mean of its divisors is an integer number (111677440).

Almost surely, 2^2120446531 is an apocalyptic number.

2120446531 is a deficient number, since it is larger than the sum of its proper divisors (559812029).

2120446531 is a wasteful number, since it uses less digits than its factorization.

2120446531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73535 (or 73528 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2120446531 is about 46048.3064943761. The cubic root of 2120446531 is about 1284.7218444404.

Adding to 2120446531 its reverse (1356440212), we get a palindrome (3476886743).

The spelling of 2120446531 in words is "two billion, one hundred twenty million, four hundred forty-six thousand, five hundred thirty-one".