531022120 has 32 divisors (see below), whose sum is σ = 1195789320. Its totient is φ = 212232960.

The previous prime is 531022109. The next prime is 531022133. The reversal of 531022120 is 21220135.

It can be written as a sum of positive squares in 4 ways, for example, as 522853956 + 8168164 = 22866^2 + 2858^2 .

It is a junction number, because it is equal to n+sod(n) for n = 531022094 and 531022103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50434 + ... + 60046.

Almost surely, 2^531022120 is an apocalyptic number.

It is an amenable number.

531022120 is an abundant number, since it is smaller than the sum of its proper divisors (664767200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531022120 is a wasteful number, since it uses less digits than its factorization.

531022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005 (or 11001 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 531022120 is about 23043.9172017259. The cubic root of 531022120 is about 809.7871309752.

Adding to 531022120 its reverse (21220135), we get a palindrome (552242255).

The spelling of 531022120 in words is "five hundred thirty-one million, twenty-two thousand, one hundred twenty".