531322145215230 has 128 divisors (see below), whose sum is σ = 1386739824248448. Its totient is φ = 129741260931072.

The previous prime is 531322145215177. The next prime is 531322145215241. The reversal of 531322145215230 is 32512541223135.

It is a super-2 number, since 2×531322145215230² (a number of 30 digits) contains 22 as substring.

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, 408319924 + ... + 409619096.

It is an arithmetic number, because the mean of its divisors is an integer number (10833904876941).

Almost surely, 2^{531322145215230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531322145215230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693369912124224).

531322145215230 is an abundant number, since it is smaller than the sum of its proper divisors (855417679033218).

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

531322145215230 is a wasteful number, since it uses less digits than its factorization.

531322145215230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320910.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 531322145215230 its reverse (32512541223135), we get a palindrome (563834686438365).

The spelling of 531322145215230 in words is "five hundred thirty-one trillion, three hundred twenty-two billion, one hundred forty-five million, two hundred fifteen thousand, two hundred thirty".