531400400412 has 24 divisors (see below), whose sum is σ = 1417067734656. Its totient is φ = 151828685808.

The previous prime is 531400400387. The next prime is 531400400417. The reversal of 531400400412 is 214004004135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531400400417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3163097538 + ... + 3163097705.

It is an arithmetic number, because the mean of its divisors is an integer number (59044488944).

Almost surely, 2^531400400412 is an apocalyptic number.

It is an amenable number.

531400400412 is an abundant number, since it is smaller than the sum of its proper divisors (885667334244).

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

531400400412 is a wasteful number, since it uses less digits than its factorization.

531400400412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6326195257 (or 6326195255 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 531400400412 its reverse (214004004135), we get a palindrome (745404404547).

The spelling of 531400400412 in words is "five hundred thirty-one billion, four hundred million, four hundred thousand, four hundred twelve".