531430251212 has 24 divisors (see below), whose sum is σ = 1064310557856. Its totient is φ = 227445095808.

The previous prime is 531430251097. The next prime is 531430251229. The reversal of 531430251212 is 212152034135.

It is a super-2 number, since 2×531430251212² (a number of 24 digits) contains 22 as substring.

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, 12926033 + ... + 12967080.

It is an arithmetic number, because the mean of its divisors is an integer number (44346273244).

Almost surely, 2^531430251212 is an apocalyptic number.

It is an amenable number.

531430251212 is an abundant number, since it is smaller than the sum of its proper divisors (532880306644).

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

531430251212 is a wasteful number, since it uses less digits than its factorization.

531430251212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25893857 (or 25893855 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 531430251212 its reverse (212152034135), we get a palindrome (743582285347).

The spelling of 531430251212 in words is "five hundred thirty-one billion, four hundred thirty million, two hundred fifty-one thousand, two hundred twelve".