531036220 has 48 divisors (see below), whose sum is σ = 1310143968. Its totient is φ = 178248960.

The previous prime is 531036179. The next prime is 531036227. The reversal of 531036220 is 22630135.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 531036191 and 531036200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531036227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89979 + ... + 95698.

It is an arithmetic number, because the mean of its divisors is an integer number (27294666).

Almost surely, 2^531036220 is an apocalyptic number.

It is an amenable number.

531036220 is an abundant number, since it is smaller than the sum of its proper divisors (779107748).

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

531036220 is a wasteful number, since it uses less digits than its factorization.

531036220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185710 (or 185708 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 531036220 is about 23044.2231372637. The cubic root of 531036220 is about 809.7942982206.

Adding to 531036220 its reverse (22630135), we get a palindrome (553666355).

The spelling of 531036220 in words is "five hundred thirty-one million, thirty-six thousand, two hundred twenty".