531314423220 has 192 divisors, whose sum is σ = 1720399564800. Its totient is φ = 120002657280.

The previous prime is 531314423197. The next prime is 531314423239. The reversal of 531314423220 is 22324413135.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76214335 + ... + 76221305.

It is an arithmetic number, because the mean of its divisors is an integer number (8960414400).

Almost surely, 2^531314423220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531314423220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860199782400).

531314423220 is an abundant number, since it is smaller than the sum of its proper divisors (1189085141580).

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

531314423220 is a wasteful number, since it uses less digits than its factorization.

531314423220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118 (or 9116 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 531314423220 its reverse (22324413135), we get a palindrome (553638836355).

The spelling of 531314423220 in words is "five hundred thirty-one billion, three hundred fourteen million, four hundred twenty-three thousand, two hundred twenty".