531263220 has 24 divisors (see below), whose sum is σ = 1487537184. Its totient is φ = 141670176.

The previous prime is 531263219. The next prime is 531263221. The reversal of 531263220 is 22362135.

It is an interprime number because it is at equal distance from previous prime (531263219) and next prime (531263221).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531263221) 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, 4427134 + ... + 4427253.

It is an arithmetic number, because the mean of its divisors is an integer number (61980716).

Almost surely, 2^531263220 is an apocalyptic number.

It is an amenable number.

531263220 is an abundant number, since it is smaller than the sum of its proper divisors (956273964).

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

531263220 is a wasteful number, since it uses less digits than its factorization.

531263220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854399 (or 8854397 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 531263220 is about 23049.1479235134. The cubic root of 531263220 is about 809.9096683292.

The spelling of 531263220 in words is "five hundred thirty-one million, two hundred sixty-three thousand, two hundred twenty".